121122231121 has 4 divisors (see below), whose sum is σ = 122655424000. Its totient is φ = 119589038244.

The previous prime is 121122231079. The next prime is 121122231127. The reversal of 121122231121 is 121132221121.

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 121122231121 - 2⁹ = 121122230609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122231127) 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, 766596321 + ... + 766596478.

It is an arithmetic number, because the mean of its divisors is an integer number (30663856000).

Almost surely, 2^121122231121 is an apocalyptic number.

It is an amenable number.

121122231121 is a deficient number, since it is larger than the sum of its proper divisors (1533192879).

121122231121 is an equidigital number, since it uses as much as digits as its factorization.

121122231121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533192878.

The product of its digits is 96, while the sum is 19.

Adding to 121122231121 its reverse (121132221121), we get a palindrome (242254452242).

The spelling of 121122231121 in words is "one hundred twenty-one billion, one hundred twenty-two million, two hundred thirty-one thousand, one hundred twenty-one".