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211120212 = 223171034903
BaseRepresentation
bin11001001010101…
…11000001010100
3112201021000111010
430211113001110
5413021321322
632541012220
75142330552
oct1445270124
9481230433
10211120212
11a9198816
125a854070
133497ba04
1420078bd2
151380420c
hexc957054

211120212 has 24 divisors (see below), whose sum is σ = 521591616. Its totient is φ = 66233728.

The previous prime is 211120201. The next prime is 211120213. The reversal of 211120212 is 212021112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211120213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517248 + ... + 517655.

It is an arithmetic number, because the mean of its divisors is an integer number (21732984).

Almost surely, 2211120212 is an apocalyptic number.

It is an amenable number.

211120212 is an abundant number, since it is smaller than the sum of its proper divisors (310471404).

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

211120212 is a wasteful number, since it uses less digits than its factorization.

211120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034927 (or 1034925 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 211120212 is about 14529.9763248259. The cubic root of 211120212 is about 595.4472187955.

Adding to 211120212 its reverse (212021112), we get a palindrome (423141324).

The spelling of 211120212 in words is "two hundred eleven million, one hundred twenty thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 17 34 51 68 102 204 1034903 2069806 3104709 4139612 6209418 12418836 17593351 35186702 52780053 70373404 105560106 211120212