2220120121231 has 4 divisors (see below), whose sum is σ = 2220140146432. Its totient is φ = 2220100096032.

The previous prime is 2220120121213. The next prime is 2220120121237. The reversal of 2220120121231 is 1321210210222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2220120121231 - 2⁹ = 2220120120719 is a prime.

It is a super-2 number, since 2×2220120121231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220120121199 and 2220120121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220120121237) 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, 9845370 + ... + 10068343.

It is an arithmetic number, because the mean of its divisors is an integer number (555035036608).

Almost surely, 2^{2220120121231} is an apocalyptic number.

2220120121231 is a deficient number, since it is larger than the sum of its proper divisors (20025201).

2220120121231 is a wasteful number, since it uses less digits than its factorization.

2220120121231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20025200.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 2220120121231 its reverse (1321210210222), we get a palindrome (3541330331453).

The spelling of 2220120121231 in words is "two trillion, two hundred twenty billion, one hundred twenty million, one hundred twenty-one thousand, two hundred thirty-one".