121202123023 has 16 divisors (see below), whose sum is σ = 124159875840. Its totient is φ = 118287487296.

The previous prime is 121202123017. The next prime is 121202123057. The reversal of 121202123023 is 320321202121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121202123023 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 (121202123723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2792736 + ... + 2835802.

It is an arithmetic number, because the mean of its divisors is an integer number (7759992240).

Almost surely, 2^121202123023 is an apocalyptic number.

121202123023 is a deficient number, since it is larger than the sum of its proper divisors (2957752817).

121202123023 is a wasteful number, since it uses less digits than its factorization.

121202123023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43566.

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

Adding to 121202123023 its reverse (320321202121), we get a palindrome (441523325144).

The spelling of 121202123023 in words is "one hundred twenty-one billion, two hundred two million, one hundred twenty-three thousand, twenty-three".