220212202012221 has 16 divisors (see below), whose sum is σ = 298975226180288. Its totient is φ = 144137455862400.

The previous prime is 220212202012183. The next prime is 220212202012289. The reversal of 220212202012221 is 122210202212022.

It is not a de Polignac number, because 220212202012221 - 2²⁵ = 220212168457789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220212202012291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1099849960 + ... + 1100050161.

It is an arithmetic number, because the mean of its divisors is an integer number (18685951636268).

Almost surely, 2^{220212202012221} is an apocalyptic number.

It is an amenable number.

220212202012221 is a deficient number, since it is larger than the sum of its proper divisors (78763024168067).

220212202012221 is a wasteful number, since it uses less digits than its factorization.

220212202012221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199900732.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 220212202012221 its reverse (122210202212022), we get a palindrome (342422404224243).

The spelling of 220212202012221 in words is "two hundred twenty trillion, two hundred twelve billion, two hundred two million, twelve thousand, two hundred twenty-one".