220113612621 has 16 divisors (see below), whose sum is σ = 372679132800. Its totient is φ = 125779207104.

The previous prime is 220113612583. The next prime is 220113612713. The reversal of 220113612621 is 126216311022.

220113612621 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 1 + 36 + 1 + 2 + 621 = 666.

It is not a de Polignac number, because 220113612621 - 2⁶ = 220113612557 is a prime.

It is a super-2 number, since 2×220113612621² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220113652621) 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, 582310956 + ... + 582311333.

It is an arithmetic number, because the mean of its divisors is an integer number (23292445800).

Almost surely, 2^220113612621 is an apocalyptic number.

220113612621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

220113612621 is a deficient number, since it is larger than the sum of its proper divisors (152565520179).

220113612621 is a wasteful number, since it uses less digits than its factorization.

220113612621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164622305 (or 1164622299 counting only the distinct ones).

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

Adding to 220113612621 its reverse (126216311022), we get a palindrome (346329923643).

The spelling of 220113612621 in words is "two hundred twenty billion, one hundred thirteen million, six hundred twelve thousand, six hundred twenty-one".