220626204401 has 4 divisors (see below), whose sum is σ = 220639689204. Its totient is φ = 220612719600.

The previous prime is 220626204317. The next prime is 220626204451. The reversal of 220626204401 is 104402626022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104402626022 = 2 ⋅52201313011.

It can be written as a sum of positive squares in 2 ways, for example, as 54263373025 + 166362831376 = 232945^2 + 407876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220626204401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (220626204451) 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, 6717830 + ... + 6750591.

It is an arithmetic number, because the mean of its divisors is an integer number (55159922301).

Almost surely, 2^220626204401 is an apocalyptic number.

It is an amenable number.

220626204401 is a deficient number, since it is larger than the sum of its proper divisors (13484803).

220626204401 is a wasteful number, since it uses less digits than its factorization.

220626204401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13484802.

The product of its (nonzero) digits is 9216, while the sum is 29.

The spelling of 220626204401 in words is "two hundred twenty billion, six hundred twenty-six million, two hundred four thousand, four hundred one".