2122200220021 has 4 divisors (see below), whose sum is σ = 2425371680032. Its totient is φ = 1819028760012.

The previous prime is 2122200219991. The next prime is 2122200220039. The reversal of 2122200220021 is 1200220022212.

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 2122200220021 - 2⁵ = 2122200219989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2122200219977 and 2122200220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122200220061) 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, 151585729995 + ... + 151585730008.

It is an arithmetic number, because the mean of its divisors is an integer number (606342920008).

Almost surely, 2^{2122200220021} is an apocalyptic number.

It is an amenable number.

2122200220021 is a deficient number, since it is larger than the sum of its proper divisors (303171460011).

2122200220021 is an equidigital number, since it uses as much as digits as its factorization.

2122200220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303171460010.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2122200220021 its reverse (1200220022212), we get a palindrome (3322420242233).

The spelling of 2122200220021 in words is "two trillion, one hundred twenty-two billion, two hundred million, two hundred twenty thousand, twenty-one".