123201110220 has 96 divisors (see below), whose sum is σ = 346502499840. Its totient is φ = 32707338240.

The previous prime is 123201110203. The next prime is 123201110231. The reversal of 123201110220 is 22011102321.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123201110220.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13802679 + ... + 13811601.

It is an arithmetic number, because the mean of its divisors is an integer number (3609401040).

Almost surely, 2^123201110220 is an apocalyptic number.

123201110220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123201110220 is an abundant number, since it is smaller than the sum of its proper divisors (223301389620).

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

123201110220 is a wasteful number, since it uses less digits than its factorization.

123201110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9935 (or 9933 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 123201110220 its reverse (22011102321), we get a palindrome (145212212541).

The spelling of 123201110220 in words is "one hundred twenty-three billion, two hundred one million, one hundred ten thousand, two hundred twenty".