220858881 has 4 divisors (see below), whose sum is σ = 294478512. Its totient is φ = 147239252.

The previous prime is 220858877. The next prime is 220858901. The reversal of 220858881 is 188858022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 220858881 - 2² = 220858877 is a prime.

It is a super-2 number, since 2×220858881² = 97557290633144322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220858801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36809811 + ... + 36809816.

It is an arithmetic number, because the mean of its divisors is an integer number (73619628).

Almost surely, 2^220858881 is an apocalyptic number.

It is an amenable number.

220858881 is a deficient number, since it is larger than the sum of its proper divisors (73619631).

220858881 is an equidigital number, since it uses as much as digits as its factorization.

220858881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73619630.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 220858881 is about 14861.3216437839. The cubic root of 220858881 is about 604.4656447926.

The spelling of 220858881 in words is "two hundred twenty million, eight hundred fifty-eight thousand, eight hundred eighty-one".