102010021092 has 144 divisors (see below), whose sum is σ = 312704945280. Its totient is φ = 27371990016.

The previous prime is 102010021051. The next prime is 102010021103. The reversal of 102010021092 is 290120010201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1975134 + ... + 2026122.

It is an arithmetic number, because the mean of its divisors is an integer number (2171562120).

Almost surely, 2^102010021092 is an apocalyptic number.

102010021092 is a gapful number since it is divisible by the number (12) 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 102010021092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (156352472640).

102010021092 is an abundant number, since it is smaller than the sum of its proper divisors (210694924188).

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

102010021092 is a wasteful number, since it uses less digits than its factorization.

102010021092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51490 (or 51485 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 102010021092 its reverse (290120010201), we get a palindrome (392130031293).

The spelling of 102010021092 in words is "one hundred two billion, ten million, twenty-one thousand, ninety-two".