220820409955101 has 32 divisors (see below), whose sum is σ = 324861969168000. Its totient is φ = 132307418234880.

The previous prime is 220820409955043. The next prime is 220820409955139. The reversal of 220820409955101 is 101559904028022.

It is not a de Polignac number, because 220820409955101 - 2⁴² = 216422363443997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220820409955151) 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, 66748156 + ... + 69978261.

It is an arithmetic number, because the mean of its divisors is an integer number (10151936536500).

Almost surely, 2^{220820409955101} is an apocalyptic number.

It is an amenable number.

220820409955101 is a deficient number, since it is larger than the sum of its proper divisors (104041559212899).

220820409955101 is a wasteful number, since it uses less digits than its factorization.

220820409955101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136726989.

The product of its (nonzero) digits is 518400, while the sum is 48.

The spelling of 220820409955101 in words is "two hundred twenty trillion, eight hundred twenty billion, four hundred nine million, nine hundred fifty-five thousand, one hundred one".