122231210021 has 4 divisors (see below), whose sum is σ = 124831874112. Its totient is φ = 119630545932.

The previous prime is 122231209951. The next prime is 122231210047. The reversal of 122231210021 is 120012132221.

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 122231210021 - 2²² = 122227015717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122231210821) 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, 1300331975 + ... + 1300332068.

It is an arithmetic number, because the mean of its divisors is an integer number (31207968528).

Almost surely, 2^122231210021 is an apocalyptic number.

It is an amenable number.

122231210021 is a deficient number, since it is larger than the sum of its proper divisors (2600664091).

122231210021 is an equidigital number, since it uses as much as digits as its factorization.

122231210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600664090.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 122231210021 its reverse (120012132221), we get a palindrome (242243342242).

The spelling of 122231210021 in words is "one hundred twenty-two billion, two hundred thirty-one million, two hundred ten thousand, twenty-one".