23221231101012 has 144 divisors (see below), whose sum is σ = 66274419843072. Its totient is φ = 6196918029120.

The previous prime is 23221231101001. The next prime is 23221231101109. The reversal of 23221231101012 is 21010113212232.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 23221231101012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3239748 + ... + 7545755.

It is an arithmetic number, because the mean of its divisors is an integer number (460239026688).

Almost surely, 2^{23221231101012} is an apocalyptic number.

It is an amenable number.

23221231101012 is an abundant number, since it is smaller than the sum of its proper divisors (43053188742060).

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

23221231101012 is a wasteful number, since it uses less digits than its factorization.

23221231101012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785626 (or 10785605 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 23221231101012 its reverse (21010113212232), we get a palindrome (44231344313244).

The spelling of 23221231101012 in words is "twenty-three trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred one thousand, twelve".