121142444023 has 24 divisors (see below), whose sum is σ = 133906208832. Its totient is φ = 109484404224.

The previous prime is 121142443997. The next prime is 121142444041. The reversal of 121142444023 is 320444241121.

It is a de Polignac number, because none of the positive numbers 2^k-121142444023 is a prime.

It is a super-3 number, since 3×121142444023³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121142443982 and 121142444000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142444323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 635761 + ... + 804037.

It is an arithmetic number, because the mean of its divisors is an integer number (5579425368).

Almost surely, 2^121142444023 is an apocalyptic number.

121142444023 is a deficient number, since it is larger than the sum of its proper divisors (12763764809).

121142444023 is a wasteful number, since it uses less digits than its factorization.

121142444023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168411 (or 168394 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 121142444023 its reverse (320444241121), we get a palindrome (441586685144).

The spelling of 121142444023 in words is "one hundred twenty-one billion, one hundred forty-two million, four hundred forty-four thousand, twenty-three".