101222012201021 has 2 divisors, whose sum is σ = 101222012201022. Its totient is φ = 101222012201020.

The previous prime is 101222012200951. The next prime is 101222012201071. The reversal of 101222012201021 is 120102210222101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92473514179225 + 8748498021796 = 9616315^2 + 2957786^2 .

It is an emirp because it is prime and its reverse (120102210222101) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101222012201021 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 (101222012201071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50611006100510 + 50611006100511.

It is an arithmetic number, because the mean of its divisors is an integer number (50611006100511).

Almost surely, 2^{101222012201021} is an apocalyptic number.

It is an amenable number.

101222012201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101222012201021 is an equidigital number, since it uses as much as digits as its factorization.

101222012201021 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 101222012201021 its reverse (120102210222101), we get a palindrome (221324222423122).

The spelling of 101222012201021 in words is "one hundred one trillion, two hundred twenty-two billion, twelve million, two hundred one thousand, twenty-one".