2120020221131 has 4 divisors (see below), whose sum is σ = 2120023166712. Its totient is φ = 2120017275552.

The previous prime is 2120020221097. The next prime is 2120020221133. The reversal of 2120020221131 is 1311220200212.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120020221131 is a prime.

It is a super-2 number, since 2×2120020221131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120020221133) 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, 404051 + ... + 2098403.

It is an arithmetic number, because the mean of its divisors is an integer number (530005791678).

Almost surely, 2^{2120020221131} is an apocalyptic number.

2120020221131 is a deficient number, since it is larger than the sum of its proper divisors (2945581).

2120020221131 is a wasteful number, since it uses less digits than its factorization.

2120020221131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945580.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2120020221131 its reverse (1311220200212), we get a palindrome (3431240421343).

The spelling of 2120020221131 in words is "two trillion, one hundred twenty billion, twenty million, two hundred twenty-one thousand, one hundred thirty-one".