122121010213231 has 4 divisors (see below), whose sum is σ = 122140710334000. Its totient is φ = 122101310092464.

The previous prime is 122121010213229. The next prime is 122121010213277. The reversal of 122121010213231 is 132312010121221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122121010213231 - 2¹ = 122121010213229 is a prime.

It is a super-2 number, since 2×122121010213231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121010213331) 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, 9850051086 + ... + 9850063483.

It is an arithmetic number, because the mean of its divisors is an integer number (30535177583500).

Almost surely, 2^{122121010213231} is an apocalyptic number.

122121010213231 is a deficient number, since it is larger than the sum of its proper divisors (19700120769).

122121010213231 is an equidigital number, since it uses as much as digits as its factorization.

122121010213231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19700120768.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 122121010213231 its reverse (132312010121221), we get a palindrome (254433020334452).

The spelling of 122121010213231 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, ten million, two hundred thirteen thousand, two hundred thirty-one".