Search a number
-
+
2121101112 = 233136798401
BaseRepresentation
bin111111001101101…
…0110111100111000
312110211020002201110
41332123112330320
513321000213422
6550250320320
7103364030154
oct17633267470
95424202643
102121101112
11999340729
124b24290a0
1327a598520
141619c0064
15c633460c
hex7e6d6f38

2121101112 has 32 divisors (see below), whose sum is σ = 5710657680. Its totient is φ = 652646400.

The previous prime is 2121101083. The next prime is 2121101137. The reversal of 2121101112 is 2111011212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3398889 + ... + 3399512.

Almost surely, 22121101112 is an apocalyptic number.

It is an amenable number.

2121101112 is an abundant number, since it is smaller than the sum of its proper divisors (3589556568).

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

2121101112 is a wasteful number, since it uses less digits than its factorization.

2121101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6798423 (or 6798419 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 2121101112 is about 46055.4134928783. The cubic root of 2121101112 is about 1284.8540285469.

Adding to 2121101112 its reverse (2111011212), we get a palindrome (4232112324).

The spelling of 2121101112 in words is "two billion, one hundred twenty-one million, one hundred one thousand, one hundred twelve".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 312 6798401 13596802 20395203 27193604 40790406 54387208 81580812 88379213 163161624 176758426 265137639 353516852 530275278 707033704 1060550556 2121101112