2220012120021 has 12 divisors (see below), whose sum is σ = 3124005976512. Its totient is φ = 1402112917224.

The previous prime is 2220012120019. The next prime is 2220012120031. The reversal of 2220012120021 is 1200212100222.

It is not a de Polignac number, because 2220012120021 - 2¹ = 2220012120019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220012120031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1024935261 + ... + 1024937426.

It is an arithmetic number, because the mean of its divisors is an integer number (260333831376).

Almost surely, 2^{2220012120021} is an apocalyptic number.

It is an amenable number.

2220012120021 is a deficient number, since it is larger than the sum of its proper divisors (903993856491).

2220012120021 is a wasteful number, since it uses less digits than its factorization.

2220012120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2049872728 (or 2049872709 counting only the distinct ones).

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

Adding to 2220012120021 its reverse (1200212100222), we get a palindrome (3420224220243).

The spelling of 2220012120021 in words is "two trillion, two hundred twenty billion, twelve million, one hundred twenty thousand, twenty-one".