101122221010021 has 4 divisors (see below), whose sum is σ = 101860339411692. Its totient is φ = 100384102608352.

The previous prime is 101122221009983. The next prime is 101122221010081. The reversal of 101122221010021 is 120010122221101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 32803912600900 + 68318308409121 = 5727470^2 + 8265489^2 .

It is a cyclic number.

It is not a de Polignac number, because 101122221010021 - 2⁷ = 101122221009893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101122221009977 and 101122221010004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101122221010081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369059200630 + ... + 369059200903.

It is an arithmetic number, because the mean of its divisors is an integer number (25465084852923).

Almost surely, 2^{101122221010021} is an apocalyptic number.

It is an amenable number.

101122221010021 is a deficient number, since it is larger than the sum of its proper divisors (738118401671).

101122221010021 is an equidigital number, since it uses as much as digits as its factorization.

101122221010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738118401670.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 101122221010021 its reverse (120010122221101), we get a palindrome (221132343231122).

The spelling of 101122221010021 in words is "one hundred one trillion, one hundred twenty-two billion, two hundred twenty-one million, ten thousand, twenty-one".