122100322021 has 4 divisors (see below), whose sum is σ = 122104121452. Its totient is φ = 122096522592.

The previous prime is 122100322009. The next prime is 122100322031. The reversal of 122100322021 is 120223001221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120223001221 = 599 ⋅200706179.

It can be written as a sum of positive squares in 2 ways, for example, as 87444404100 + 34655917921 = 295710^2 + 186161^2 .

It is a cyclic number.

It is not a de Polignac number, because 122100322021 - 2¹⁵ = 122100289253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122100321986 and 122100322004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122100322031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1851096 + ... + 1915921.

It is an arithmetic number, because the mean of its divisors is an integer number (30526030363).

Almost surely, 2^122100322021 is an apocalyptic number.

It is an amenable number.

122100322021 is a deficient number, since it is larger than the sum of its proper divisors (3799431).

122100322021 is an equidigital number, since it uses as much as digits as its factorization.

122100322021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3799430.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 122100322021 its reverse (120223001221), we get a palindrome (242323323242).

The spelling of 122100322021 in words is "one hundred twenty-two billion, one hundred million, three hundred twenty-two thousand, twenty-one".