122010221021 has 4 divisors (see below), whose sum is σ = 131395622652. Its totient is φ = 112624819392.

The previous prime is 122010220999. The next prime is 122010221033. The reversal of 122010221021 is 120122010221.

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 74829602500 + 47180618521 = 273550^2 + 217211^2 .

It is a cyclic number.

It is not a de Polignac number, because 122010221021 - 2²⁶ = 121943112157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122010220987 and 122010221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010221521) 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, 4692700796 + ... + 4692700821.

It is an arithmetic number, because the mean of its divisors is an integer number (32848905663).

Almost surely, 2^122010221021 is an apocalyptic number.

It is an amenable number.

122010221021 is a deficient number, since it is larger than the sum of its proper divisors (9385401631).

122010221021 is an equidigital number, since it uses as much as digits as its factorization.

122010221021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9385401630.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122010221021 its reverse (120122010221), we get a palindrome (242132231242).

The spelling of 122010221021 in words is "one hundred twenty-two billion, ten million, two hundred twenty-one thousand, twenty-one".