2122021200121 has 4 divisors (see below), whose sum is σ = 2157987661200. Its totient is φ = 2086054739044.

The previous prime is 2122021200119. The next prime is 2122021200133. The reversal of 2122021200121 is 1210021202212.

It is a happy number.

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 2122021200121 - 2¹ = 2122021200119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2122021200095 and 2122021200104.

It is not an unprimeable number, because it can be changed into a prime (2122021203121) 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, 17983230451 + ... + 17983230568.

It is an arithmetic number, because the mean of its divisors is an integer number (539496915300).

Almost surely, 2^{2122021200121} is an apocalyptic number.

It is an amenable number.

2122021200121 is a deficient number, since it is larger than the sum of its proper divisors (35966461079).

2122021200121 is an equidigital number, since it uses as much as digits as its factorization.

2122021200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35966461078.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2122021200121 its reverse (1210021202212), we get a palindrome (3332042402333).

The spelling of 2122021200121 in words is "two trillion, one hundred twenty-two billion, twenty-one million, two hundred thousand, one hundred twenty-one".