102211969452 has 12 divisors (see below), whose sum is σ = 238494595416. Its totient is φ = 34070656480.

The previous prime is 102211969451. The next prime is 102211969463. The reversal of 102211969452 is 254969112201.

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

It is not an unprimeable number, because it can be changed into a prime (102211969451) 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, 4258832049 + ... + 4258832072.

It is an arithmetic number, because the mean of its divisors is an integer number (19874549618).

Almost surely, 2^102211969452 is an apocalyptic number.

102211969452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102211969452 is an abundant number, since it is smaller than the sum of its proper divisors (136282625964).

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

102211969452 is a wasteful number, since it uses less digits than its factorization.

102211969452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8517664128 (or 8517664126 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The spelling of 102211969452 in words is "one hundred two billion, two hundred eleven million, nine hundred sixty-nine thousand, four hundred fifty-two".