123110206220 has 12 divisors (see below), whose sum is σ = 258531433104. Its totient is φ = 49244082480.

The previous prime is 123110206211. The next prime is 123110206231. The reversal of 123110206220 is 22602011321.

It is a super-2 number, since 2×123110206220² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 6155510311 = 123110206220 / (1 + 2 + 3 + 1 + 1 + 0 + 2 + 0 + 6 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 123110206192 and 123110206201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3077755136 + ... + 3077755175.

It is an arithmetic number, because the mean of its divisors is an integer number (21544286092).

Almost surely, 2^123110206220 is an apocalyptic number.

123110206220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123110206220 is an abundant number, since it is smaller than the sum of its proper divisors (135421226884).

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

123110206220 is a wasteful number, since it uses less digits than its factorization.

123110206220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6155510320 (or 6155510318 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 123110206220 its reverse (22602011321), we get a palindrome (145712217541).

The spelling of 123110206220 in words is "one hundred twenty-three billion, one hundred ten million, two hundred six thousand, two hundred twenty".