90821221112 has 24 divisors (see below), whose sum is σ = 178015610640. Its totient is φ = 43436234160.

The previous prime is 90821221109. The next prime is 90821221123. The reversal of 90821221112 is 21112212809.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10726064 + ... + 10734527.

It is an arithmetic number, because the mean of its divisors is an integer number (7417317110).

Almost surely, 2^90821221112 is an apocalyptic number.

90821221112 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

90821221112 is a deficient number, since it is larger than the sum of its proper divisors (87194389528).

90821221112 is a wasteful number, since it uses less digits than its factorization.

90821221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21460643 (or 21460616 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The spelling of 90821221112 in words is "ninety billion, eight hundred twenty-one million, two hundred twenty-one thousand, one hundred twelve".