220299281 has 8 divisors (see below), whose sum is σ = 234192000. Its totient is φ = 206636400.

The previous prime is 220299269. The next prime is 220299301. The reversal of 220299281 is 182992022.

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

It is a de Polignac number, because none of the positive numbers 2^k-220299281 is a prime.

It is a super-2 number, since 2×220299281² = 97063546418233922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220299241) 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, 55481 + ... + 59318.

It is an arithmetic number, because the mean of its divisors is an integer number (29274000).

Almost surely, 2^220299281 is an apocalyptic number.

It is an amenable number.

220299281 is a deficient number, since it is larger than the sum of its proper divisors (13892719).

220299281 is a wasteful number, since it uses less digits than its factorization.

220299281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114919.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 220299281 is about 14842.4823058678. The cubic root of 220299281 is about 603.9546924847.

The spelling of 220299281 in words is "two hundred twenty million, two hundred ninety-nine thousand, two hundred eighty-one".