102219956244 has 108 divisors (see below), whose sum is σ = 300685472724. Its totient is φ = 29195002368.

The previous prime is 102219956239. The next prime is 102219956273. The reversal of 102219956244 is 442659912201.

102219956244 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 19 + 9 + 5 + 624 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 93643344144 + 8576612100 = 306012^2 + 92610^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102219956244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 5665782 + ... + 5683794.

Almost surely, 2^102219956244 is an apocalyptic number.

102219956244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102219956244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150342736362).

102219956244 is an abundant number, since it is smaller than the sum of its proper divisors (198465516480).

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

102219956244 is a wasteful number, since it uses less digits than its factorization.

102219956244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21254 (or 21242 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 102219956244 in words is "one hundred two billion, two hundred nineteen million, nine hundred fifty-six thousand, two hundred forty-four".