100032552721 has 2 divisors, whose sum is σ = 100032552722. Its totient is φ = 100032552720.

The previous prime is 100032552713. The next prime is 100032552727. The reversal of 100032552721 is 127255230001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57365519121 + 42667033600 = 239511^2 + 206560^2 .

It is a cyclic number.

It is not a de Polignac number, because 100032552721 - 2³ = 100032552713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100032552721.

It is not a weakly prime, because it can be changed into another prime (100032552727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50016276360 + 50016276361.

It is an arithmetic number, because the mean of its divisors is an integer number (50016276361).

Almost surely, 2^100032552721 is an apocalyptic number.

It is an amenable number.

100032552721 is a deficient number, since it is larger than the sum of its proper divisors (1).

100032552721 is an equidigital number, since it uses as much as digits as its factorization.

100032552721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

Adding to 100032552721 its reverse (127255230001), we get a palindrome (227287782722).

The spelling of 100032552721 in words is "one hundred billion, thirty-two million, five hundred fifty-two thousand, seven hundred twenty-one".