3122213220 has 72 divisors (see below), whose sum is σ = 10823676864. Its totient is φ = 713648448.

The previous prime is 3122213207. The next prime is 3122213239. The reversal of 3122213220 is 223122213.

It is a super-2 number, since 2×3122213220² = 19496430782285536800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 3122213193 and 3122213202.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1237714 + ... + 1240233.

Almost surely, 2^3122213220 is an apocalyptic number.

3122213220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3122213220 is an abundant number, since it is smaller than the sum of its proper divisors (7701463644).

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

3122213220 is a wasteful number, since it uses less digits than its factorization.

3122213220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2477969 (or 2477964 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 3122213220 is about 55876.7681599428. The cubic root of 3122213220 is about 1461.5741481690.

Adding to 3122213220 its reverse (223122213), we get a palindrome (3345335433).

The spelling of 3122213220 in words is "three billion, one hundred twenty-two million, two hundred thirteen thousand, two hundred twenty".