100402021297 has 2 divisors, whose sum is σ = 100402021298. Its totient is φ = 100402021296.

The previous prime is 100402021289. The next prime is 100402021351. The reversal of 100402021297 is 792120204001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63705255201 + 36696766096 = 252399^2 + 191564^2 .

It is a cyclic number.

It is not a de Polignac number, because 100402021297 - 2³ = 100402021289 is a prime.

It is not a weakly prime, because it can be changed into another prime (100402028297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50201010648 + 50201010649.

It is an arithmetic number, because the mean of its divisors is an integer number (50201010649).

Almost surely, 2^100402021297 is an apocalyptic number.

It is an amenable number.

100402021297 is a deficient number, since it is larger than the sum of its proper divisors (1).

100402021297 is an equidigital number, since it uses as much as digits as its factorization.

100402021297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 100402021297 its reverse (792120204001), we get a palindrome (892522225298).

The spelling of 100402021297 in words is "one hundred billion, four hundred two million, twenty-one thousand, two hundred ninety-seven".