122121431121 has 4 divisors (see below), whose sum is σ = 162828574832. Its totient is φ = 81414287412.

The previous prime is 122121431119. The next prime is 122121431123. The reversal of 122121431121 is 121134121221.

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 an interprime number because it is at equal distance from previous prime (122121431119) and next prime (122121431123).

It is not a de Polignac number, because 122121431121 - 2¹ = 122121431119 is a prime.

It is a super-2 number, since 2×122121431121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122121431123) 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, 20353571851 + ... + 20353571856.

It is an arithmetic number, because the mean of its divisors is an integer number (40707143708).

Almost surely, 2^122121431121 is an apocalyptic number.

It is an amenable number.

122121431121 is a deficient number, since it is larger than the sum of its proper divisors (40707143711).

122121431121 is an equidigital number, since it uses as much as digits as its factorization.

122121431121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40707143710.

The product of its digits is 192, while the sum is 21.

Adding to 122121431121 its reverse (121134121221), we get a palindrome (243255552342).

The spelling of 122121431121 in words is "one hundred twenty-two billion, one hundred twenty-one million, four hundred thirty-one thousand, one hundred twenty-one".