23111220344212 has 48 divisors (see below), whose sum is σ = 54303286972032. Its totient is φ = 8311727594880.

The previous prime is 23111220344189. The next prime is 23111220344263. The reversal of 23111220344212 is 21244302211132.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2886012523 + ... + 2886020530.

It is an arithmetic number, because the mean of its divisors is an integer number (1131318478584).

Almost surely, 2^{23111220344212} is an apocalyptic number.

23111220344212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

23111220344212 is an abundant number, since it is smaller than the sum of its proper divisors (31192066627820).

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

23111220344212 is a wasteful number, since it uses less digits than its factorization.

23111220344212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772033088 (or 5772033086 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 23111220344212 its reverse (21244302211132), we get a palindrome (44355522555344).

It can be divided in two parts, 23111220 and 344212, that added together give a palindrome (23455432).

The spelling of 23111220344212 in words is "twenty-three trillion, one hundred eleven billion, two hundred twenty million, three hundred forty-four thousand, two hundred twelve".