121020010023 has 32 divisors (see below), whose sum is σ = 186494296320. Its totient is φ = 68990082560.

The previous prime is 121020009961. The next prime is 121020010031. The reversal of 121020010023 is 320010020121.

It is a cyclic number.

It is not a de Polignac number, because 121020010023 - 2⁸ = 121020009767 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121020009990 and 121020010008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020010093) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 895636 + ... + 1021862.

It is an arithmetic number, because the mean of its divisors is an integer number (5827946760).

Almost surely, 2^121020010023 is an apocalyptic number.

121020010023 is a deficient number, since it is larger than the sum of its proper divisors (65474286297).

121020010023 is a wasteful number, since it uses less digits than its factorization.

121020010023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127967.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 121020010023 its reverse (320010020121), we get a palindrome (441030030144).

The spelling of 121020010023 in words is "one hundred twenty-one billion, twenty million, ten thousand, twenty-three".