210123311112220 has 48 divisors (see below), whose sum is σ = 481451060160000. Its totient is φ = 76396150336320.

The previous prime is 210123311112173. The next prime is 210123311112229. The reversal of 210123311112220 is 22211113321012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 210123311112191 and 210123311112200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210123311112229) 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, 75673320 + ... + 78400879.

It is an arithmetic number, because the mean of its divisors is an integer number (10030230420000).

Almost surely, 2^{210123311112220} is an apocalyptic number.

210123311112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210123311112220 is an abundant number, since it is smaller than the sum of its proper divisors (271327749047780).

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

210123311112220 is a wasteful number, since it uses less digits than its factorization.

210123311112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154080418 (or 154080416 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 210123311112220 its reverse (22211113321012), we get a palindrome (232334424433232).

The spelling of 210123311112220 in words is "two hundred ten trillion, one hundred twenty-three billion, three hundred eleven million, one hundred twelve thousand, two hundred twenty".