2220212100021 has 16 divisors (see below), whose sum is σ = 3048759273600. Its totient is φ = 1436126027328.

The previous prime is 2220212100011. The next prime is 2220212100049. The reversal of 2220212100021 is 1200012120222.

It is not a de Polignac number, because 2220212100021 - 2¹⁵ = 2220212067253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220212100011) 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, 27817966 + ... + 27897663.

It is an arithmetic number, because the mean of its divisors is an integer number (190547454600).

Almost surely, 2^{2220212100021} is an apocalyptic number.

It is an amenable number.

2220212100021 is a deficient number, since it is larger than the sum of its proper divisors (828547173579).

2220212100021 is a wasteful number, since it uses less digits than its factorization.

2220212100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55716028.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2220212100021 its reverse (1200012120222), we get a palindrome (3420224220243).

The spelling of 2220212100021 in words is "two trillion, two hundred twenty billion, two hundred twelve million, one hundred thousand, twenty-one".