122313013021 has 4 divisors (see below), whose sum is σ = 124318144444. Its totient is φ = 120307881600.

The previous prime is 122313013007. The next prime is 122313013037. The reversal of 122313013021 is 120310313221.

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 41295929796 + 81017083225 = 203214^2 + 284635^2 .

It is a cyclic number.

It is not a de Polignac number, because 122313013021 - 2¹¹ = 122313010973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122313013021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122313013621) 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, 1002565620 + ... + 1002565741.

It is an arithmetic number, because the mean of its divisors is an integer number (31079536111).

Almost surely, 2^122313013021 is an apocalyptic number.

It is an amenable number.

122313013021 is a deficient number, since it is larger than the sum of its proper divisors (2005131423).

122313013021 is an equidigital number, since it uses as much as digits as its factorization.

122313013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2005131422.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 122313013021 its reverse (120310313221), we get a palindrome (242623326242).

The spelling of 122313013021 in words is "one hundred twenty-two billion, three hundred thirteen million, thirteen thousand, twenty-one".