2122211030021 has 4 divisors (see below), whose sum is σ = 2123698215072. Its totient is φ = 2120723844972.

The previous prime is 2122211029927. The next prime is 2122211030041. The reversal of 2122211030021 is 1200301122212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2122211030021 - 2²² = 2122206835717 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 (2122211030041) 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, 743590385 + ... + 743593238.

It is an arithmetic number, because the mean of its divisors is an integer number (530924553768).

Almost surely, 2^{2122211030021} is an apocalyptic number.

It is an amenable number.

2122211030021 is a deficient number, since it is larger than the sum of its proper divisors (1487185051).

2122211030021 is a wasteful number, since it uses less digits than its factorization.

2122211030021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1487185050.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2122211030021 its reverse (1200301122212), we get a palindrome (3322512152233).

The spelling of 2122211030021 in words is "two trillion, one hundred twenty-two billion, two hundred eleven million, thirty thousand, twenty-one".