102111100212 has 48 divisors (see below), whose sum is σ = 260605094400. Its totient is φ = 30861099360.

The previous prime is 102111100193. The next prime is 102111100213. The reversal of 102111100212 is 212001111201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111100213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 970512 + ... + 1070567.

It is an arithmetic number, because the mean of its divisors is an integer number (5429272800).

Almost surely, 2^102111100212 is an apocalyptic number.

102111100212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102111100212 is an abundant number, since it is smaller than the sum of its proper divisors (158493994188).

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

102111100212 is a wasteful number, since it uses less digits than its factorization.

102111100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2041476 (or 2041474 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102111100212 its reverse (212001111201), we get a palindrome (314112211413).

The spelling of 102111100212 in words is "one hundred two billion, one hundred eleven million, one hundred thousand, two hundred twelve".