121021403023 has 8 divisors (see below), whose sum is σ = 121178687616. Its totient is φ = 120864202200.

The previous prime is 121021403011. The next prime is 121021403029. The reversal of 121021403023 is 320304120121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121021403023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021403029) 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 7 ways as a sum of consecutive naturals, for example, 3181788 + ... + 3219598.

It is an arithmetic number, because the mean of its divisors is an integer number (15147335952).

Almost surely, 2^121021403023 is an apocalyptic number.

121021403023 is a deficient number, since it is larger than the sum of its proper divisors (157284593).

121021403023 is a wasteful number, since it uses less digits than its factorization.

121021403023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41885.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 121021403023 its reverse (320304120121), we get a palindrome (441325523144).

The spelling of 121021403023 in words is "one hundred twenty-one billion, twenty-one million, four hundred three thousand, twenty-three".