232121001997 has 2 divisors, whose sum is σ = 232121001998. Its totient is φ = 232121001996.

The previous prime is 232121001919. The next prime is 232121002027. The reversal of 232121001997 is 799100121232.

232121001997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229121139556 + 2999862441 = 478666^2 + 54771^2 .

It is a cyclic number.

It is not a de Polignac number, because 232121001997 - 2³¹ = 229973518349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232121001907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116060500998 + 116060500999.

It is an arithmetic number, because the mean of its divisors is an integer number (116060500999).

Almost surely, 2^232121001997 is an apocalyptic number.

It is an amenable number.

232121001997 is a deficient number, since it is larger than the sum of its proper divisors (1).

232121001997 is an equidigital number, since it uses as much as digits as its factorization.

232121001997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The spelling of 232121001997 in words is "two hundred thirty-two billion, one hundred twenty-one million, one thousand, nine hundred ninety-seven".