101621606220 has 72 divisors (see below), whose sum is σ = 309424411296. Its totient is φ = 26996044032.

The previous prime is 101621606209. The next prime is 101621606221. The reversal of 101621606220 is 22606126101.

101621606220 is a `hidden beast` number, since 1 + 0 + 16 + 21 + 6 + 0 + 622 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (101621606221) 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, 1025977 + ... + 1120656.

It is an arithmetic number, because the mean of its divisors is an integer number (4297561268).

Almost surely, 2^101621606220 is an apocalyptic number.

101621606220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101621606220 is an abundant number, since it is smaller than the sum of its proper divisors (207802805076).

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

101621606220 is a wasteful number, since it uses less digits than its factorization.

101621606220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146911 (or 2146906 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The spelling of 101621606220 in words is "one hundred one billion, six hundred twenty-one million, six hundred six thousand, two hundred twenty".