101222161211021 has 2 divisors, whose sum is σ = 101222161211022. Its totient is φ = 101222161211020.

The previous prime is 101222161210997. The next prime is 101222161211123. The reversal of 101222161211021 is 120112161222101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70824427275625 + 30397733935396 = 8415725^2 + 5513414^2 .

It is a cyclic number.

It is not a de Polignac number, because 101222161211021 - 2¹⁰ = 101222161209997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101222161211621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611080605510 + 50611080605511.

It is an arithmetic number, because the mean of its divisors is an integer number (50611080605511).

Almost surely, 2^{101222161211021} is an apocalyptic number.

It is an amenable number.

101222161211021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222161211021 is an equidigital number, since it uses as much as digits as its factorization.

101222161211021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 23.

The spelling of 101222161211021 in words is "one hundred one trillion, two hundred twenty-two billion, one hundred sixty-one million, two hundred eleven thousand, twenty-one".