220202201102221 has 4 divisors (see below), whose sum is σ = 237140831956252. Its totient is φ = 203263570248192.

The previous prime is 220202201102137. The next prime is 220202201102231. The reversal of 220202201102221 is 122201102202022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29080285752996 + 191121915349225 = 5392614^2 + 13824685^2 .

It is a cyclic number.

It is not a de Polignac number, because 220202201102221 - 2¹⁵ = 220202201069453 is a prime.

It is a super-2 number, since 2×220202201102221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220202201102231) 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, 8469315426996 + ... + 8469315427021.

It is an arithmetic number, because the mean of its divisors is an integer number (59285207989063).

Almost surely, 2^{220202201102221} is an apocalyptic number.

It is an amenable number.

220202201102221 is a deficient number, since it is larger than the sum of its proper divisors (16938630854031).

220202201102221 is a wasteful number, since it uses less digits than its factorization.

220202201102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16938630854030.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 220202201102221 its reverse (122201102202022), we get a palindrome (342403303304243).

The spelling of 220202201102221 in words is "two hundred twenty trillion, two hundred two billion, two hundred one million, one hundred two thousand, two hundred twenty-one".