101112221201021 has 2 divisors, whose sum is σ = 101112221201022. Its totient is φ = 101112221201020.

The previous prime is 101112221201011. The next prime is 101112221201041. The reversal of 101112221201021 is 120102122211101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 92187746088025 + 8924475112996 = 9601445^2 + 2987386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101112221201021 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101112221201011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50556110600510 + 50556110600511.

It is an arithmetic number, because the mean of its divisors is an integer number (50556110600511).

Almost surely, 2^{101112221201021} is an apocalyptic number.

It is an amenable number.

101112221201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101112221201021 is an equidigital number, since it uses as much as digits as its factorization.

101112221201021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 101112221201021 its reverse (120102122211101), we get a palindrome (221214343412122).

The spelling of 101112221201021 in words is "one hundred one trillion, one hundred twelve billion, two hundred twenty-one million, two hundred one thousand, twenty-one".