122101010210021 has 4 divisors (see below), whose sum is σ = 123923413347552. Its totient is φ = 120278607072492.

The previous prime is 122101010209991. The next prime is 122101010210077. The reversal of 122101010210021 is 120012010101221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122101010210021 - 2³⁰ = 122099936468197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122101010209978 and 122101010210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101010210521) 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, 911201568665 + ... + 911201568798.

It is an arithmetic number, because the mean of its divisors is an integer number (30980853336888).

Almost surely, 2^{122101010210021} is an apocalyptic number.

It is an amenable number.

122101010210021 is a deficient number, since it is larger than the sum of its proper divisors (1822403137531).

122101010210021 is an equidigital number, since it uses as much as digits as its factorization.

122101010210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822403137530.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 122101010210021 its reverse (120012010101221), we get a palindrome (242113020311242).

The spelling of 122101010210021 in words is "one hundred twenty-two trillion, one hundred one billion, ten million, two hundred ten thousand, twenty-one".