12220200120121 has 4 divisors (see below), whose sum is σ = 13965942994432. Its totient is φ = 10474457245812.

The previous prime is 12220200120091. The next prime is 12220200120133. The reversal of 12220200120121 is 12102100202221.

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 not a de Polignac number, because 12220200120121 - 2¹³ = 12220200111929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12220200120095 and 12220200120104.

It is not an unprimeable number, because it can be changed into a prime (12220203120121) 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, 872871437145 + ... + 872871437158.

It is an arithmetic number, because the mean of its divisors is an integer number (3491485748608).

Almost surely, 2^{12220200120121} is an apocalyptic number.

It is an amenable number.

12220200120121 is a deficient number, since it is larger than the sum of its proper divisors (1745742874311).

12220200120121 is an equidigital number, since it uses as much as digits as its factorization.

12220200120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1745742874310.

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

Adding to 12220200120121 its reverse (12102100202221), we get a palindrome (24322300322342).

The spelling of 12220200120121 in words is "twelve trillion, two hundred twenty billion, two hundred million, one hundred twenty thousand, one hundred twenty-one".