220954081 has 12 divisors (see below), whose sum is σ = 233664816. Its totient is φ = 208814760.

The previous prime is 220954061. The next prime is 220954087. The reversal of 220954081 is 180459022.

It is not a de Polignac number, because 220954081 - 2¹¹ = 220952033 is a prime.

It is a super-2 number, since 2×220954081² = 97641411821109122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220954087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38650 + ... + 43996.

It is an arithmetic number, because the mean of its divisors is an integer number (19472068).

Almost surely, 2^220954081 is an apocalyptic number.

It is an amenable number.

220954081 is a deficient number, since it is larger than the sum of its proper divisors (12710735).

220954081 is an equidigital number, since it uses as much as digits as its factorization.

220954081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5452 (or 5421 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 220954081 is about 14864.5242439844. The cubic root of 220954081 is about 604.5524828419.

The spelling of 220954081 in words is "two hundred twenty million, nine hundred fifty-four thousand, eighty-one".