102111022212112 has 20 divisors (see below), whose sum is σ = 200223721267920. Its totient is φ = 50440384465568.

The previous prime is 102111022212061. The next prime is 102111022212113. The reversal of 102111022212112 is 211212220111201.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 102111022212112.

It is not an unprimeable number, because it can be changed into a prime (102111022212113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38445413662 + ... + 38445416317.

It is an arithmetic number, because the mean of its divisors is an integer number (10011186063396).

Almost surely, 2^{102111022212112} is an apocalyptic number.

It is an amenable number.

102111022212112 is a deficient number, since it is larger than the sum of its proper divisors (98112699055808).

102111022212112 is an equidigital number, since it uses as much as digits as its factorization.

102111022212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76890830070 (or 76890830064 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102111022212112 its reverse (211212220111201), we get a palindrome (313323242323313).

The spelling of 102111022212112 in words is "one hundred two trillion, one hundred eleven billion, twenty-two million, two hundred twelve thousand, one hundred twelve".