123110210211220 has 12 divisors (see below), whose sum is σ = 258531441443604. Its totient is φ = 49244084084480.

The previous prime is 123110210211211. The next prime is 123110210211239. The reversal of 123110210211220 is 22112012011321.

It can be written as a sum of positive squares in 2 ways, for example, as 82156712353156 + 40953497858064 = 9064034^2 + 6399492^2 .

It is a super-2 number, since 2×123110210211220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 3077755255261 + ... + 3077755255300.

It is an arithmetic number, because the mean of its divisors is an integer number (21544286786967).

Almost surely, 2^{123110210211220} is an apocalyptic number.

123110210211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123110210211220 is an abundant number, since it is smaller than the sum of its proper divisors (135421231232384).

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

123110210211220 is a wasteful number, since it uses less digits than its factorization.

123110210211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6155510510570 (or 6155510510568 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 123110210211220 its reverse (22112012011321), we get a palindrome (145222222222541).

The spelling of 123110210211220 in words is "one hundred twenty-three trillion, one hundred ten billion, two hundred ten million, two hundred eleven thousand, two hundred twenty".