99506220220 has 24 divisors (see below), whose sum is σ = 227959705008. Its totient is φ = 36184080000.

The previous prime is 99506220199. The next prime is 99506220239. The reversal of 99506220220 is 2202260599.

It is a happy number.

It is a super-2 number, since 2×99506220220² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99506220220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226150281 + ... + 226150720.

It is an arithmetic number, because the mean of its divisors is an integer number (9498321042).

Almost surely, 2^99506220220 is an apocalyptic number.

It is an amenable number.

99506220220 is an abundant number, since it is smaller than the sum of its proper divisors (128453484788).

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

99506220220 is a wasteful number, since it uses less digits than its factorization.

99506220220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452301021 (or 452301019 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 99506220220 in words is "ninety-nine billion, five hundred six million, two hundred twenty thousand, two hundred twenty".