100101221222021 has 2 divisors, whose sum is σ = 100101221222022. Its totient is φ = 100101221222020.

The previous prime is 100101221221999. The next prime is 100101221222027. The reversal of 100101221222021 is 120222122101001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 61881995313121 + 38219225908900 = 7866511^2 + 6182170^2 .

It is a cyclic number.

It is not a de Polignac number, because 100101221222021 - 2²⁶ = 100101154113157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100101221222027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50050610611010 + 50050610611011.

It is an arithmetic number, because the mean of its divisors is an integer number (50050610611011).

Almost surely, 2^{100101221222021} is an apocalyptic number.

It is an amenable number.

100101221222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

100101221222021 is an equidigital number, since it uses as much as digits as its factorization.

100101221222021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100101221222021 its reverse (120222122101001), we get a palindrome (220323343323022).

The spelling of 100101221222021 in words is "one hundred trillion, one hundred one billion, two hundred twenty-one million, two hundred twenty-two thousand, twenty-one".