101111111212 has 12 divisors (see below), whose sum is σ = 177047271576. Its totient is φ = 50526176480.

The previous prime is 101111111207. The next prime is 101111111263. The reversal of 101111111212 is 212111111101.

It is a junction number, because it is equal to n+sod(n) for n = 101111111192 and 101111111201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7337038 + ... + 7350805.

It is an arithmetic number, because the mean of its divisors is an integer number (14753939298).

Almost surely, 2^101111111212 is an apocalyptic number.

It is an amenable number.

101111111212 is a deficient number, since it is larger than the sum of its proper divisors (75936160364).

101111111212 is a wasteful number, since it uses less digits than its factorization.

101111111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14689568 (or 14689566 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 101111111212 its reverse (212111111101), we get a palindrome (313222222313).

The spelling of 101111111212 in words is "one hundred one billion, one hundred eleven million, one hundred eleven thousand, two hundred twelve".