23221402121 has 8 divisors (see below), whose sum is σ = 24752995200. Its totient is φ = 21720750480.

The previous prime is 23221402111. The next prime is 23221402151. The reversal of 23221402121 is 12120412232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23221402121 - 2¹⁰ = 23221401097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23221402093 and 23221402102.

It is not an unprimeable number, because it can be changed into a prime (23221402111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7733810 + ... + 7736811.

It is an arithmetic number, because the mean of its divisors is an integer number (3094124400).

Almost surely, 2^23221402121 is an apocalyptic number.

It is an amenable number.

23221402121 is a deficient number, since it is larger than the sum of its proper divisors (1531593079).

23221402121 is a wasteful number, since it uses less digits than its factorization.

23221402121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15470719.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 23221402121 its reverse (12120412232), we get a palindrome (35341814353).

The spelling of 23221402121 in words is "twenty-three billion, two hundred twenty-one million, four hundred two thousand, one hundred twenty-one".