212102100112 has 30 divisors (see below), whose sum is σ = 478041342198. Its totient is φ = 90900899712.

The previous prime is 212102100061. The next prime is 212102100139. The reversal of 212102100112 is 211001201212.

It can be written as a sum of positive squares in only one way, i.e., 149889768336 + 62212331776 = 387156^2 + 249424^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212102100092 and 212102100101.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 135268413 + ... + 135269980.

Almost surely, 2^212102100112 is an apocalyptic number.

It is an amenable number.

212102100112 is an abundant number, since it is smaller than the sum of its proper divisors (265939242086).

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

212102100112 is a wasteful number, since it uses less digits than its factorization.

212102100112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270538415 (or 270538402 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212102100112 its reverse (211001201212), we get a palindrome (423103301324).

The spelling of 212102100112 in words is "two hundred twelve billion, one hundred two million, one hundred thousand, one hundred twelve".