23011223100 has 144 divisors (see below), whose sum is σ = 67196719968. Its totient is φ = 6079656960.

The previous prime is 23011223087. The next prime is 23011223107. The reversal of 23011223100 is 132211032.

It is a super-2 number, since 2×23011223100² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 23011223100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011223107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28871902 + ... + 28872698.

Almost surely, 2^23011223100 is an apocalyptic number.

23011223100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23011223100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33598359984).

23011223100 is an abundant number, since it is smaller than the sum of its proper divisors (44185496868).

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

23011223100 is a wasteful number, since it uses less digits than its factorization.

23011223100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1584 (or 1577 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 23011223100 its reverse (132211032), we get a palindrome (23143434132).

The spelling of 23011223100 in words is "twenty-three billion, eleven million, two hundred twenty-three thousand, one hundred".