3123220122 has 48 divisors (see below), whose sum is σ = 7395908832. Its totient is φ = 944667360.

The previous prime is 3123220081. The next prime is 3123220157. The reversal of 3123220122 is 2210223213.

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 = 3123220095 and 3123220104.

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, 93888 + ... + 122724.

It is an arithmetic number, because the mean of its divisors is an integer number (154081434).

Almost surely, 2^3123220122 is an apocalyptic number.

3123220122 is an abundant number, since it is smaller than the sum of its proper divisors (4272688710).

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

3123220122 is a wasteful number, since it uses less digits than its factorization.

3123220122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29403 (or 29400 counting only the distinct ones).

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

The square root of 3123220122 is about 55885.7774572386. Note that the first 3 decimals coincide. The cubic root of 3123220122 is about 1461.7312486675.

Adding to 3123220122 its reverse (2210223213), we get a palindrome (5333443335).

The spelling of 3123220122 in words is "three billion, one hundred twenty-three million, two hundred twenty thousand, one hundred twenty-two".