23211220012 has 12 divisors (see below), whose sum is σ = 40651303896. Its totient is φ = 11596561760.

The previous prime is 23211220007. The next prime is 23211220093. The reversal of 23211220012 is 21002211232.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2256289 + ... + 2266552.

It is an arithmetic number, because the mean of its divisors is an integer number (3387608658).

Almost surely, 2^23211220012 is an apocalyptic number.

It is an amenable number.

23211220012 is a deficient number, since it is larger than the sum of its proper divisors (17440083884).

23211220012 is a wasteful number, since it uses less digits than its factorization.

23211220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524128 (or 4524126 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 23211220012 its reverse (21002211232), we get a palindrome (44213431244).

The spelling of 23211220012 in words is "twenty-three billion, two hundred eleven million, two hundred twenty thousand, twelve".