213021012112 has 20 divisors (see below), whose sum is σ = 426042025216. Its totient is φ = 103074683040.

The previous prime is 213021012109. The next prime is 213021012119. The reversal of 213021012112 is 211210120312.

213021012112 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (213021012119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214738428 + ... + 214739419.

Almost surely, 2^213021012112 is an apocalyptic number.

It is an amenable number.

213021012112 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213021012112 is a wasteful number, since it uses less digits than its factorization.

213021012112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429477886 (or 429477880 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 213021012112 its reverse (211210120312), we get a palindrome (424231132424).

The spelling of 213021012112 in words is "two hundred thirteen billion, twenty-one million, twelve thousand, one hundred twelve".