121011223023 has 8 divisors (see below), whose sum is σ = 179275886000. Its totient is φ = 80674148664.

The previous prime is 121011223013. The next prime is 121011223037. The reversal of 121011223023 is 320322110121.

It is not a de Polignac number, because 121011223023 - 2²² = 121007028719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121011222987 and 121011223005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011223013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2240948548 + ... + 2240948601.

It is an arithmetic number, because the mean of its divisors is an integer number (22409485750).

Almost surely, 2^121011223023 is an apocalyptic number.

121011223023 is a deficient number, since it is larger than the sum of its proper divisors (58264662977).

121011223023 is an equidigital number, since it uses as much as digits as its factorization.

121011223023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4481897158 (or 4481897152 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 121011223023 its reverse (320322110121), we get a palindrome (441333333144).

The spelling of 121011223023 in words is "one hundred twenty-one billion, eleven million, two hundred twenty-three thousand, twenty-three".