220640414421 has 16 divisors (see below), whose sum is σ = 336236161664. Its totient is φ = 126071913024.

The previous prime is 220640414383. The next prime is 220640414461. The reversal of 220640414421 is 124414046022.

It is not a de Polignac number, because 220640414421 - 2²⁷ = 220506196693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220640414461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13726 + ... + 664431.

It is an arithmetic number, because the mean of its divisors is an integer number (21014760104).

Almost surely, 2^220640414421 is an apocalyptic number.

220640414421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220640414421 is a deficient number, since it is larger than the sum of its proper divisors (115595747243).

220640414421 is a wasteful number, since it uses less digits than its factorization.

220640414421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 693660.

The product of its (nonzero) digits is 12288, while the sum is 30.

The spelling of 220640414421 in words is "two hundred twenty billion, six hundred forty million, four hundred fourteen thousand, four hundred twenty-one".