2120121122223 has 32 divisors (see below), whose sum is σ = 3058205762304. Its totient is φ = 1298733875712.

The previous prime is 2120121122167. The next prime is 2120121122261. The reversal of 2120121122223 is 3222211210212.

It is not a de Polignac number, because 2120121122223 - 2⁸ = 2120121121967 is a prime.

It is a super-2 number, since 2×2120121122223² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2120121122223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120121122263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7339240 + ... + 7622642.

It is an arithmetic number, because the mean of its divisors is an integer number (95568930072).

Almost surely, 2^{2120121122223} is an apocalyptic number.

2120121122223 is a deficient number, since it is larger than the sum of its proper divisors (938084640081).

2120121122223 is a wasteful number, since it uses less digits than its factorization.

2120121122223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284295.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2120121122223 its reverse (3222211210212), we get a palindrome (5342332332435).

The spelling of 2120121122223 in words is "two trillion, one hundred twenty billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred twenty-three".