2120212331031 has 4 divisors (see below), whose sum is σ = 2826949774712. Its totient is φ = 1413474887352.

The previous prime is 2120212331009. The next prime is 2120212331033. The reversal of 2120212331031 is 1301332120212.

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

It is not a de Polignac number, because 2120212331031 - 2¹⁵ = 2120212298263 is a prime.

It is a super-2 number, since 2×2120212331031² (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 = 2120212330989 and 2120212331007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2120212331033) 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, 353368721836 + ... + 353368721841.

It is an arithmetic number, because the mean of its divisors is an integer number (706737443678).

Almost surely, 2^{2120212331031} is an apocalyptic number.

2120212331031 is a deficient number, since it is larger than the sum of its proper divisors (706737443681).

2120212331031 is an equidigital number, since it uses as much as digits as its factorization.

2120212331031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706737443680.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2120212331031 its reverse (1301332120212), we get a palindrome (3421544451243).

The spelling of 2120212331031 in words is "two trillion, one hundred twenty billion, two hundred twelve million, three hundred thirty-one thousand, thirty-one".