101211122012 has 48 divisors (see below), whose sum is σ = 237810757632. Its totient is φ = 36399602880.

The previous prime is 101211121961. The next prime is 101211122053. The reversal of 101211122012 is 210221112101.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12634748 + ... + 12642755.

It is an arithmetic number, because the mean of its divisors is an integer number (4954390784).

Almost surely, 2^101211122012 is an apocalyptic number.

It is an amenable number.

101211122012 is an abundant number, since it is smaller than the sum of its proper divisors (136599635620).

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

101211122012 is a wasteful number, since it uses less digits than its factorization.

101211122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25277538 (or 25277536 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 101211122012 its reverse (210221112101), we get a palindrome (311432234113).

The spelling of 101211122012 in words is "one hundred one billion, two hundred eleven million, one hundred twenty-two thousand, twelve".