100432213121 has 2 divisors, whose sum is σ = 100432213122. Its totient is φ = 100432213120.

The previous prime is 100432213081. The next prime is 100432213201. The reversal of 100432213121 is 121312234001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50238739600 + 50193473521 = 224140^2 + 224039^2 .

It is a cyclic number.

It is not a de Polignac number, because 100432213121 - 2³⁰ = 99358471297 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100432213093 and 100432213102.

It is not a weakly prime, because it can be changed into another prime (100432263121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50216106560 + 50216106561.

It is an arithmetic number, because the mean of its divisors is an integer number (50216106561).

Almost surely, 2^100432213121 is an apocalyptic number.

It is an amenable number.

100432213121 is a deficient number, since it is larger than the sum of its proper divisors (1).

100432213121 is an equidigital number, since it uses as much as digits as its factorization.

100432213121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 100432213121 its reverse (121312234001), we get a palindrome (221744447122).

The spelling of 100432213121 in words is "one hundred billion, four hundred thirty-two million, two hundred thirteen thousand, one hundred twenty-one".