20601622220 has 24 divisors (see below), whose sum is σ = 43468455408. Its totient is φ = 8201592000.

The previous prime is 20601622213. The next prime is 20601622241. The reversal of 20601622220 is 2222610602.

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, 2436731 + ... + 2445170.

It is an arithmetic number, because the mean of its divisors is an integer number (1811185642).

Almost surely, 2^20601622220 is an apocalyptic number.

20601622220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20601622220 is an abundant number, since it is smaller than the sum of its proper divisors (22866833188).

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

20601622220 is a wasteful number, since it uses less digits than its factorization.

20601622220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4882121 (or 4882119 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The spelling of 20601622220 in words is "twenty billion, six hundred one million, six hundred twenty-two thousand, two hundred twenty".