102111010021212 has 12 divisors (see below), whose sum is σ = 238259023382856. Its totient is φ = 34037003340400.

The previous prime is 102111010021193. The next prime is 102111010021219. The reversal of 102111010021212 is 212120010111201.

It is a happy number.

102111010021212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 102111010021191 and 102111010021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111010021219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4254625417539 + ... + 4254625417562.

It is an arithmetic number, because the mean of its divisors is an integer number (19854918615238).

Almost surely, 2^{102111010021212} is an apocalyptic number.

102111010021212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102111010021212 is an abundant number, since it is smaller than the sum of its proper divisors (136148013361644).

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

102111010021212 is a wasteful number, since it uses less digits than its factorization.

102111010021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8509250835108 (or 8509250835106 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102111010021212 its reverse (212120010111201), we get a palindrome (314231020132413).

The spelling of 102111010021212 in words is "one hundred two trillion, one hundred eleven billion, ten million, twenty-one thousand, two hundred twelve".