220107981 has 8 divisors (see below), whose sum is σ = 293567904. Its totient is φ = 146693360.

The previous prime is 220107973. The next prime is 220107991. The reversal of 220107981 is 189701022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220107981 - 2³ = 220107973 is a prime.

It is a super-2 number, since 2×220107981² = 96895046599792722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220107911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2386 + ... + 21116.

It is an arithmetic number, because the mean of its divisors is an integer number (36695988).

Almost surely, 2^220107981 is an apocalyptic number.

It is an amenable number.

220107981 is a deficient number, since it is larger than the sum of its proper divisors (73459923).

220107981 is a wasteful number, since it uses less digits than its factorization.

220107981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22651.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 220107981 is about 14836.0365664149. The cubic root of 220107981 is about 603.7798243222.

The spelling of 220107981 in words is "two hundred twenty million, one hundred seven thousand, nine hundred eighty-one".