122100202022021 has 4 divisors (see below), whose sum is σ = 122238480847392. Its totient is φ = 121961923196652.

The previous prime is 122100202022011. The next prime is 122100202022053. The reversal of 122100202022021 is 120220202001221.

It is a happy number.

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 122100202022021 - 2²⁶ = 122100134913157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122100202022011) 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, 69139411361 + ... + 69139413126.

It is an arithmetic number, because the mean of its divisors is an integer number (30559620211848).

Almost surely, 2^{122100202022021} is an apocalyptic number.

It is an amenable number.

122100202022021 is a deficient number, since it is larger than the sum of its proper divisors (138278825371).

122100202022021 is an equidigital number, since it uses as much as digits as its factorization.

122100202022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138278825370.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122100202022021 its reverse (120220202001221), we get a palindrome (242320404023242).

The spelling of 122100202022021 in words is "one hundred twenty-two trillion, one hundred billion, two hundred two million, twenty-two thousand, twenty-one".