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2220102202212 = 223261669505617
BaseRepresentation
bin100000010011101000011…
…001110011001101100100
321212020110201222012210100
4200103220121303031210
5242333232130432322
64415522331024100
7316253126232426
oct40235031631544
97766421865710
102220102202212
117865a38a7044
122ba32b89b030
1313147c49314b
147964c65c816
153cb3b159dac
hex204e8673364

2220102202212 has 18 divisors (see below), whose sum is σ = 5611925011238. Its totient is φ = 740034067392.

The previous prime is 2220102202211. The next prime is 2220102202229. The reversal of 2220102202212 is 2122022010222.

2220102202212 is a `hidden beast` number, since 2 + 220 + 1 + 0 + 220 + 221 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1783202353956 + 436899848256 = 1335366^2 + 660984^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2220102202211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30834752773 + ... + 30834752844.

Almost surely, 22220102202212 is an apocalyptic number.

It is an amenable number.

2220102202212 is an abundant number, since it is smaller than the sum of its proper divisors (3391822809026).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2220102202212 is a wasteful number, since it uses less digits than its factorization.

2220102202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61669505627 (or 61669505622 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2220102202212 its reverse (2122022010222), we get a palindrome (4342124212434).

The spelling of 2220102202212 in words is "two trillion, two hundred twenty billion, one hundred two million, two hundred two thousand, two hundred twelve".

Divisors: 1 2 3 4 6 9 12 18 36 61669505617 123339011234 185008516851 246678022468 370017033702 555025550553 740034067404 1110051101106 2220102202212