2121202321031 has 8 divisors (see below), whose sum is σ = 2121996744000. Its totient is φ = 2120408008960.

The previous prime is 2121202321027. The next prime is 2121202321039. The reversal of 2121202321031 is 1301232021212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2121202321031 - 2² = 2121202321027 is a prime.

It is a super-2 number, since 2×2121202321031² (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 = 2121202320994 and 2121202321012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121202321039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62723855 + ... + 62757663.

It is an arithmetic number, because the mean of its divisors is an integer number (265249593000).

Almost surely, 2^{2121202321031} is an apocalyptic number.

2121202321031 is a deficient number, since it is larger than the sum of its proper divisors (794422969).

2121202321031 is a wasteful number, since it uses less digits than its factorization.

2121202321031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55449.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2121202321031 its reverse (1301232021212), we get a palindrome (3422434342243).

The spelling of 2121202321031 in words is "two trillion, one hundred twenty-one billion, two hundred two million, three hundred twenty-one thousand, thirty-one".