121404461023 has 4 divisors (see below), whose sum is σ = 121694209560. Its totient is φ = 121114712488.

The previous prime is 121404460999. The next prime is 121404461029. The reversal of 121404461023 is 320164404121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121404461023 - 2⁹ = 121404460511 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121404460982 and 121404461000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121404461029) 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 3 ways as a sum of consecutive naturals, for example, 144873640 + ... + 144874477.

It is an arithmetic number, because the mean of its divisors is an integer number (30423552390).

Almost surely, 2^121404461023 is an apocalyptic number.

121404461023 is a deficient number, since it is larger than the sum of its proper divisors (289748537).

121404461023 is an equidigital number, since it uses as much as digits as its factorization.

121404461023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289748536.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 121404461023 its reverse (320164404121), we get a palindrome (441568865144).

The spelling of 121404461023 in words is "one hundred twenty-one billion, four hundred four million, four hundred sixty-one thousand, twenty-three".