121001231023 has 2 divisors, whose sum is σ = 121001231024. Its totient is φ = 121001231022.

The previous prime is 121001230993. The next prime is 121001231069. The reversal of 121001231023 is 320132100121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001231023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121001230988 and 121001231006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121001238023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500615511 + 60500615512.

It is an arithmetic number, because the mean of its divisors is an integer number (60500615512).

Almost surely, 2^121001231023 is an apocalyptic number.

121001231023 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001231023 is an equidigital number, since it uses as much as digits as its factorization.

121001231023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 121001231023 its reverse (320132100121), we get a palindrome (441133331144).

The spelling of 121001231023 in words is "one hundred twenty-one billion, one million, two hundred thirty-one thousand, twenty-three".