23201121212 has 48 divisors (see below), whose sum is σ = 44227415232. Its totient is φ = 10608000000.

The previous prime is 23201121211. The next prime is 23201121239. The reversal of 23201121212 is 21212110232.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23201121211) 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, 339962 + ... + 402462.

It is an arithmetic number, because the mean of its divisors is an integer number (921404484).

Almost surely, 2^23201121212 is an apocalyptic number.

It is an amenable number.

23201121212 is a deficient number, since it is larger than the sum of its proper divisors (21026294020).

23201121212 is a wasteful number, since it uses less digits than its factorization.

23201121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62678 (or 62676 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 23201121212 its reverse (21212110232), we get a palindrome (44413231444).

The spelling of 23201121212 in words is "twenty-three billion, two hundred one million, one hundred twenty-one thousand, two hundred twelve".