202111222012 has 24 divisors (see below), whose sum is σ = 409092598656. Its totient is φ = 85575490608.

The previous prime is 202111221989. The next prime is 202111222031. The reversal of 202111222012 is 210222111202.

It is a happy number.

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, 43481158 + ... + 43485805.

It is an arithmetic number, because the mean of its divisors is an integer number (17045524944).

Almost surely, 2^202111222012 is an apocalyptic number.

It is an amenable number.

202111222012 is an abundant number, since it is smaller than the sum of its proper divisors (206981376644).

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

202111222012 is a wasteful number, since it uses less digits than its factorization.

202111222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86967057 (or 86967055 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202111222012 its reverse (210222111202), we get a palindrome (412333333214).

The spelling of 202111222012 in words is "two hundred two billion, one hundred eleven million, two hundred twenty-two thousand, twelve".