220036361 has 4 divisors (see below), whose sum is σ = 221354112. Its totient is φ = 218718612.

The previous prime is 220036339. The next prime is 220036379. The reversal of 220036361 is 163630022.

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, and also an emirpimes, since its reverse is a distinct semiprime: 163630022 = 2 ⋅81815011.

It is a cyclic number.

It is not a de Polignac number, because 220036361 - 2²⁶ = 152927497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220036961) 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, 658625 + ... + 658958.

It is an arithmetic number, because the mean of its divisors is an integer number (55338528).

Almost surely, 2^220036361 is an apocalyptic number.

It is an amenable number.

220036361 is a deficient number, since it is larger than the sum of its proper divisors (1317751).

220036361 is a wasteful number, since it uses less digits than its factorization.

220036361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317750.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 220036361 is about 14833.6226526092. The cubic root of 220036361 is about 603.7143301015.

Adding to 220036361 its reverse (163630022), we get a palindrome (383666383).

The spelling of 220036361 in words is "two hundred twenty million, thirty-six thousand, three hundred sixty-one".