121023231121 has 16 divisors (see below), whose sum is σ = 135242110080. Its totient is φ = 107578880640.

The previous prime is 121023231103. The next prime is 121023231127. The reversal of 121023231121 is 121132320121.

It is a cyclic number.

It is not a de Polignac number, because 121023231121 - 2⁹ = 121023230609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121023231127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1484956 + ... + 1564333.

It is an arithmetic number, because the mean of its divisors is an integer number (8452631880).

Almost surely, 2^121023231121 is an apocalyptic number.

It is an amenable number.

121023231121 is a deficient number, since it is larger than the sum of its proper divisors (14218878959).

121023231121 is a wasteful number, since it uses less digits than its factorization.

121023231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3049416.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121023231121 its reverse (121132320121), we get a palindrome (242155551242).

The spelling of 121023231121 in words is "one hundred twenty-one billion, twenty-three million, two hundred thirty-one thousand, one hundred twenty-one".