989990022112 has 96 divisors (see below), whose sum is σ = 2414709287424. Its totient is φ = 389050560000.

The previous prime is 989990022083. The next prime is 989990022137. The reversal of 989990022112 is 211220099989.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a self number, because there is not a number n which added to its sum of digits gives 989990022112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 686014 + ... + 1565437.

It is an arithmetic number, because the mean of its divisors is an integer number (25153221744).

Almost surely, 2^989990022112 is an apocalyptic number.

It is an amenable number.

989990022112 is an abundant number, since it is smaller than the sum of its proper divisors (1424719265312).

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

989990022112 is a wasteful number, since it uses less digits than its factorization.

989990022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2251632 (or 2251624 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 52.

The spelling of 989990022112 in words is "nine hundred eighty-nine billion, nine hundred ninety million, twenty-two thousand, one hundred twelve".