12121000023 has 32 divisors (see below), whose sum is σ = 18413793792. Its totient is φ = 7020288000.

The previous prime is 12121000009. The next prime is 12121000033. The reversal of 12121000023 is 32000012121.

It is not a de Polignac number, because 12121000023 - 2⁴ = 12121000007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12120999972 and 12121000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121000033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904911 + ... + 918207.

It is an arithmetic number, because the mean of its divisors is an integer number (575431056).

Almost surely, 2^12121000023 is an apocalyptic number.

12121000023 is a deficient number, since it is larger than the sum of its proper divisors (6292793769).

12121000023 is a wasteful number, since it uses less digits than its factorization.

12121000023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14535.

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

Adding to 12121000023 its reverse (32000012121), we get a palindrome (44121012144).

The spelling of 12121000023 in words is "twelve billion, one hundred twenty-one million, twenty-three", and thus it is an aban number.