100221321029969 has 2 divisors, whose sum is σ = 100221321029970. Its totient is φ = 100221321029968.

The previous prime is 100221321029933. The next prime is 100221321030023. The reversal of 100221321029969 is 969920123122001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70537489795600 + 29683831234369 = 8398660^2 + 5448287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221321029969 is a prime.

It is a super-2 number, since 2×100221321029969² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100221321029569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110660514984 + 50110660514985.

It is an arithmetic number, because the mean of its divisors is an integer number (50110660514985).

Almost surely, 2^{100221321029969} is an apocalyptic number.

It is an amenable number.

100221321029969 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221321029969 is an equidigital number, since it uses as much as digits as its factorization.

100221321029969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 209952, while the sum is 47.

The spelling of 100221321029969 in words is "one hundred trillion, two hundred twenty-one billion, three hundred twenty-one million, twenty-nine thousand, nine hundred sixty-nine".