100392021397 has 2 divisors, whose sum is σ = 100392021398. Its totient is φ = 100392021396.

The previous prime is 100392021383. The next prime is 100392021413. The reversal of 100392021397 is 793120293001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99695536516 + 696484881 = 315746^2 + 26391^2 .

It is an emirp because it is prime and its reverse (793120293001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100392021397 - 2¹⁵ = 100391988629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100392021377) 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, 50196010698 + 50196010699.

It is an arithmetic number, because the mean of its divisors is an integer number (50196010699).

Almost surely, 2^100392021397 is an apocalyptic number.

It is an amenable number.

100392021397 is a deficient number, since it is larger than the sum of its proper divisors (1).

100392021397 is an equidigital number, since it uses as much as digits as its factorization.

100392021397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The spelling of 100392021397 in words is "one hundred billion, three hundred ninety-two million, twenty-one thousand, three hundred ninety-seven".