23133001212 has 18 divisors (see below), whose sum is σ = 58475086488. Its totient is φ = 7711000392.

The previous prime is 23133001207. The next prime is 23133001217. The reversal of 23133001212 is 21210033132.

It is an interprime number because it is at equal distance from previous prime (23133001207) and next prime (23133001217).

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133001217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 321291648 + ... + 321291719.

It is an arithmetic number, because the mean of its divisors is an integer number (3248615916).

Almost surely, 2^23133001212 is an apocalyptic number.

It is an amenable number.

23133001212 is an abundant number, since it is smaller than the sum of its proper divisors (35342085276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23133001212 is a wasteful number, since it uses less digits than its factorization.

23133001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642583377 (or 642583372 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23133001212 its reverse (21210033132), we get a palindrome (44343034344).

The spelling of 23133001212 in words is "twenty-three billion, one hundred thirty-three million, one thousand, two hundred twelve".