23202032121 has 20 divisors (see below), whose sum is σ = 34808608692. Its totient is φ = 15401622528.

The previous prime is 23202032107. The next prime is 23202032131. The reversal of 23202032121 is 12123020232.

23202032121 is a `hidden beast` number, since 2 + 320 + 2 + 0 + 321 + 21 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 6136528896 + 17065503225 = 78336^2 + 130635^2 .

It is not a de Polignac number, because 23202032121 - 2¹⁷ = 23201901049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23202032094 and 23202032103.

It is not an unprimeable number, because it can be changed into a prime (23202032131) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 595816 + ... + 633561.

Almost surely, 2^23202032121 is an apocalyptic number.

It is an amenable number.

23202032121 is a deficient number, since it is larger than the sum of its proper divisors (11606576571).

23202032121 is a wasteful number, since it uses less digits than its factorization.

23202032121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229622 (or 1229613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 23202032121 its reverse (12123020232), we get a palindrome (35325052353).

The spelling of 23202032121 in words is "twenty-three billion, two hundred two million, thirty-two thousand, one hundred twenty-one".