2121200110331 has 2 divisors, whose sum is σ = 2121200110332. Its totient is φ = 2121200110330.

The previous prime is 2121200110303. The next prime is 2121200110357. The reversal of 2121200110331 is 1330110021212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121200110331 - 2²⁶ = 2121133001467 is a prime.

It is a super-2 number, since 2×2121200110331² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2121200110231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060600055165 + 1060600055166.

It is an arithmetic number, because the mean of its divisors is an integer number (1060600055166).

Almost surely, 2^{2121200110331} is an apocalyptic number.

2121200110331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121200110331 is an equidigital number, since it uses as much as digits as its factorization.

2121200110331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 2121200110331 its reverse (1330110021212), we get a palindrome (3451310131543).

The spelling of 2121200110331 in words is "two trillion, one hundred twenty-one billion, two hundred million, one hundred ten thousand, three hundred thirty-one".