102211221001212 has 36 divisors (see below), whose sum is σ = 259810645578120. Its totient is φ = 33880069528992.

The previous prime is 102211221001139. The next prime is 102211221001213. The reversal of 102211221001212 is 212100122112201.

102211221001212 is a `hidden beast` number, since 10 + 221 + 1 + 221 + 0 + 0 + 1 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 (102211221001213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7930721443 + ... + 7930734330.

It is an arithmetic number, because the mean of its divisors is an integer number (7216962377170).

Almost surely, 2^{102211221001212} is an apocalyptic number.

102211221001212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102211221001212 is an abundant number, since it is smaller than the sum of its proper divisors (157599424576908).

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

102211221001212 is a wasteful number, since it uses less digits than its factorization.

102211221001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15861455962 (or 15861455957 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 102211221001212 its reverse (212100122112201), we get a palindrome (314311343113413).

The spelling of 102211221001212 in words is "one hundred two trillion, two hundred eleven billion, two hundred twenty-one million, one thousand, two hundred twelve".