220676796921 has 32 divisors (see below), whose sum is σ = 354315136000. Its totient is φ = 119346903360.

The previous prime is 220676796917. The next prime is 220676796929. The reversal of 220676796921 is 129697676022.

It is not a de Polignac number, because 220676796921 - 2² = 220676796917 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (220676796929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136530 + ... + 678228.

It is an arithmetic number, because the mean of its divisors is an integer number (11072348000).

Almost surely, 2^220676796921 is an apocalyptic number.

220676796921 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220676796921 is a deficient number, since it is larger than the sum of its proper divisors (133638339079).

220676796921 is a wasteful number, since it uses less digits than its factorization.

220676796921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542749.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 220676796921 in words is "two hundred twenty billion, six hundred seventy-six million, seven hundred ninety-six thousand, nine hundred twenty-one".