220302448222921 has 9 divisors (see below), whose sum is σ = 220432620367029. Its totient is φ = 220172352930336.

The previous prime is 220302448222919. The next prime is 220302448222931. The reversal of 220302448222921 is 129222844203022.

The square root of 220302448222921 is 14842589.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 61955962606521 + 158346485616400 = 7871211^2 + 12583580^2 .

It is not a de Polignac number, because 220302448222921 - 2¹ = 220302448222919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220302448222931) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 34034053341 + ... + 34034059813.

Almost surely, 2^{220302448222921} is an apocalyptic number.

220302448222921 is the 14842589-th square number.

220302448222921 is the 7421295-th centered octagonal number.

It is an amenable number.

220302448222921 is a deficient number, since it is larger than the sum of its proper divisors (130172144108).

220302448222921 is an frugal number, since it uses more digits than its factorization.

220302448222921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17532 (or 8766 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 43.

The spelling of 220302448222921 in words is "two hundred twenty trillion, three hundred two billion, four hundred forty-eight million, two hundred twenty-two thousand, nine hundred twenty-one".