121440213001023 has 16 divisors (see below), whose sum is σ = 185072689251840. Its totient is φ = 69386556388896.

The previous prime is 121440213001013. The next prime is 121440213001027. The reversal of 121440213001023 is 320100312044121.

It is not a de Polignac number, because 121440213001023 - 2²¹ = 121440210903871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121440213000984 and 121440213001002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121440213001027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 326936640 + ... + 327307877.

It is an arithmetic number, because the mean of its divisors is an integer number (11567043078240).

Almost surely, 2^{121440213001023} is an apocalyptic number.

121440213001023 is a deficient number, since it is larger than the sum of its proper divisors (63632476250817).

121440213001023 is an equidigital number, since it uses as much as digits as its factorization.

121440213001023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654253366.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 121440213001023 its reverse (320100312044121), we get a palindrome (441540525045144).

The spelling of 121440213001023 in words is "one hundred twenty-one trillion, four hundred forty billion, two hundred thirteen million, one thousand, twenty-three".