90221002102 has 32 divisors (see below), whose sum is σ = 174543102720. Its totient is φ = 33938933280.

The previous prime is 90221002099. The next prime is 90221002103. The reversal of 90221002102 is 20120012209.

It is a self number, because there is not a number n which added to its sum of digits gives 90221002102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90221002103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10096408 + ... + 10105339.

It is an arithmetic number, because the mean of its divisors is an integer number (5454471960).

Almost surely, 2^90221002102 is an apocalyptic number.

90221002102 is a deficient number, since it is larger than the sum of its proper divisors (84322100618).

90221002102 is a wasteful number, since it uses less digits than its factorization.

90221002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20201796.

The product of its (nonzero) digits is 144, while the sum is 19.

The spelling of 90221002102 in words is "ninety billion, two hundred twenty-one million, two thousand, one hundred two".