102021139871224 has 128 divisors (see below), whose sum is σ = 229221010529280. Its totient is φ = 41653254988800.

The previous prime is 102021139871207. The next prime is 102021139871249. The reversal of 102021139871224 is 422178931120201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 357548934 + ... + 357834154.

It is an arithmetic number, because the mean of its divisors is an integer number (1790789144760).

Almost surely, 2^{102021139871224} is an apocalyptic number.

102021139871224 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 102021139871224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114610505264640).

102021139871224 is an abundant number, since it is smaller than the sum of its proper divisors (127199870658056).

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

102021139871224 is a wasteful number, since it uses less digits than its factorization.

102021139871224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288941 (or 288937 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 43.

The spelling of 102021139871224 in words is "one hundred two trillion, twenty-one billion, one hundred thirty-nine million, eight hundred seventy-one thousand, two hundred twenty-four".