23012002221 has 8 divisors (see below), whose sum is σ = 33042875040. Its totient is φ = 14161232112.

The previous prime is 23012002207. The next prime is 23012002229. The reversal of 23012002221 is 12220021032.

It is a happy number.

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

It is not a de Polignac number, because 23012002221 - 2⁷ = 23012002093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23012002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23012002229) 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, 295025631 + ... + 295025708.

It is an arithmetic number, because the mean of its divisors is an integer number (4130359380).

Almost surely, 2^23012002221 is an apocalyptic number.

It is an amenable number.

23012002221 is a deficient number, since it is larger than the sum of its proper divisors (10030872819).

23012002221 is a wasteful number, since it uses less digits than its factorization.

23012002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590051355.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 23012002221 its reverse (12220021032), we get a palindrome (35232023253).

The spelling of 23012002221 in words is "twenty-three billion, twelve million, two thousand, two hundred twenty-one".