102211110111212 has 24 divisors (see below), whose sum is σ = 189414382505040. Its totient is φ = 48093451868160.

The previous prime is 102211110111211. The next prime is 102211110111307. The reversal of 102211110111212 is 212111011112201.

It is a super-2 number, since 2×102211110111212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (102211110111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91535762 + ... + 92645657.

It is an arithmetic number, because the mean of its divisors is an integer number (7892265937710).

Almost surely, 2^{102211110111212} is an apocalyptic number.

It is an amenable number.

102211110111212 is a deficient number, since it is larger than the sum of its proper divisors (87203272393828).

102211110111212 is a wasteful number, since it uses less digits than its factorization.

102211110111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184189601 (or 184189599 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 102211110111212 its reverse (212111011112201), we get a palindrome (314322121223413).

The spelling of 102211110111212 in words is "one hundred two trillion, two hundred eleven billion, one hundred ten million, one hundred eleven thousand, two hundred twelve".