101022221210021 has 2 divisors, whose sum is σ = 101022221210022. Its totient is φ = 101022221210020.

The previous prime is 101022221210017. The next prime is 101022221210041. The reversal of 101022221210021 is 120012122220101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99597805216900 + 1424415993121 = 9979870^2 + 1193489^2 .

It is a cyclic number.

It is not a de Polignac number, because 101022221210021 - 2² = 101022221210017 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (101022221210011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50511110605010 + 50511110605011.

It is an arithmetic number, because the mean of its divisors is an integer number (50511110605011).

Almost surely, 2^{101022221210021} is an apocalyptic number.

It is an amenable number.

101022221210021 is a deficient number, since it is larger than the sum of its proper divisors (1).

101022221210021 is an equidigital number, since it uses as much as digits as its factorization.

101022221210021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 101022221210021 its reverse (120012122220101), we get a palindrome (221034343430122).

The spelling of 101022221210021 in words is "one hundred one trillion, twenty-two billion, two hundred twenty-one million, two hundred ten thousand, twenty-one".