989920121202 has 24 divisors (see below), whose sum is σ = 2145171943980. Its totient is φ = 329920294560.

The previous prime is 989920121167. The next prime is 989920121213. The reversal of 989920121202 is 202121029989.

It can be written as a sum of positive squares in 2 ways, for example, as 700302859281 + 289617261921 = 836841^2 + 538161^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4308177 + ... + 4532132.

Almost surely, 2^989920121202 is an apocalyptic number.

989920121202 is an abundant number, since it is smaller than the sum of its proper divisors (1155251822778).

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

989920121202 is a wasteful number, since it uses less digits than its factorization.

989920121202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846538 (or 8846535 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 45.

The spelling of 989920121202 in words is "nine hundred eighty-nine billion, nine hundred twenty million, one hundred twenty-one thousand, two hundred two".