3122112220 has 48 divisors (see below), whose sum is σ = 6953391648. Its totient is φ = 1173473280.

The previous prime is 3122112211. The next prime is 3122112229. The reversal of 3122112220 is 222112213.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3122112211) and next prime (3122112229).

It is a junction number, because it is equal to n+sod(n) for n = 3122112194 and 3122112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3122112229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211480 + ... + 225760.

It is an arithmetic number, because the mean of its divisors is an integer number (144862326).

Almost surely, 2^3122112220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3122112220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3476695824).

3122112220 is an abundant number, since it is smaller than the sum of its proper divisors (3831279428).

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

3122112220 is a wasteful number, since it uses less digits than its factorization.

3122112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14950 (or 14948 counting only the distinct ones).

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

The square root of 3122112220 is about 55875.8643781016. The cubic root of 3122112220 is about 1461.5583879192.

Adding to 3122112220 its reverse (222112213), we get a palindrome (3344224433).

The spelling of 3122112220 in words is "three billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twenty".