2102332131421 has 2 divisors, whose sum is σ = 2102332131422. Its totient is φ = 2102332131420.

The previous prime is 2102332131373. The next prime is 2102332131457. The reversal of 2102332131421 is 1241312332012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1391430208921 + 710901922500 = 1179589^2 + 843150^2 .

It is a cyclic number.

It is not a de Polignac number, because 2102332131421 - 2⁹ = 2102332130909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2102332131521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1051166065710 + 1051166065711.

It is an arithmetic number, because the mean of its divisors is an integer number (1051166065711).

Almost surely, 2^{2102332131421} is an apocalyptic number.

It is an amenable number.

2102332131421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2102332131421 is an equidigital number, since it uses as much as digits as its factorization.

2102332131421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2102332131421 its reverse (1241312332012), we get a palindrome (3343644463433).

The spelling of 2102332131421 in words is "two trillion, one hundred two billion, three hundred thirty-two million, one hundred thirty-one thousand, four hundred twenty-one".