121020233123 has 16 divisors (see below), whose sum is σ = 128282918400. Its totient is φ = 113965125120.

The previous prime is 121020233099. The next prime is 121020233137. The reversal of 121020233123 is 321332020121.

It is a cyclic number.

It is not a de Polignac number, because 121020233123 - 2⁸ = 121020232867 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121020233095 and 121020233104.

It is not an unprimeable number, because it can be changed into a prime (121020233153) 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, 4932815 + ... + 4957287.

It is an arithmetic number, because the mean of its divisors is an integer number (8017682400).

Almost surely, 2^121020233123 is an apocalyptic number.

121020233123 is a deficient number, since it is larger than the sum of its proper divisors (7262685277).

121020233123 is a wasteful number, since it uses less digits than its factorization.

121020233123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28702.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 121020233123 its reverse (321332020121), we get a palindrome (442352253244).

The spelling of 121020233123 in words is "one hundred twenty-one billion, twenty million, two hundred thirty-three thousand, one hundred twenty-three".