102111110212212 has 72 divisors (see below), whose sum is σ = 273340480061376. Its totient is φ = 32029806461184.

The previous prime is 102111110212171. The next prime is 102111110212213. The reversal of 102111110212212 is 212212011111201.

It is a happy number.

102111110212212 is a `hidden beast` number, since 10 + 211 + 11 + 10 + 212 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111110212213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9270238 + ... + 17034069.

It is an arithmetic number, because the mean of its divisors is an integer number (3796395556408).

Almost surely, 2^{102111110212212} is an apocalyptic number.

102111110212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102111110212212 is an abundant number, since it is smaller than the sum of its proper divisors (171229369849164).

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

102111110212212 is a wasteful number, since it uses less digits than its factorization.

102111110212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26310677 (or 26310672 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 102111110212212 its reverse (212212011111201), we get a palindrome (314323121323413).

The spelling of 102111110212212 in words is "one hundred two trillion, one hundred eleven billion, one hundred ten million, two hundred twelve thousand, two hundred twelve".