90120011202 has 48 divisors (see below), whose sum is σ = 215170283328. Its totient is φ = 27084365280.

The previous prime is 90120011183. The next prime is 90120011207. The reversal of 90120011202 is 20211002109.

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

It is not an unprimeable number, because it can be changed into a prime (90120011207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4468174 + ... + 4488297.

It is an arithmetic number, because the mean of its divisors is an integer number (4482714236).

Almost surely, 2^90120011202 is an apocalyptic number.

90120011202 is an abundant number, since it is smaller than the sum of its proper divisors (125050272126).

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

90120011202 is a wasteful number, since it uses less digits than its factorization.

90120011202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8956535 (or 8956532 counting only the distinct ones).

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

The spelling of 90120011202 in words is "ninety billion, one hundred twenty million, eleven thousand, two hundred two".