122100711720 has 128 divisors (see below), whose sum is σ = 395333568000. Its totient is φ = 29990467584.

The previous prime is 122100711713. The next prime is 122100711737. The reversal of 122100711720 is 27117001221.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 637756 + ... + 806804.

It is an arithmetic number, because the mean of its divisors is an integer number (3088543500).

Almost surely, 2^122100711720 is an apocalyptic number.

122100711720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122100711720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197666784000).

122100711720 is an abundant number, since it is smaller than the sum of its proper divisors (273232856280).

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

122100711720 is a wasteful number, since it uses less digits than its factorization.

122100711720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169539 (or 169535 counting only the distinct ones).

The product of its (nonzero) digits is 392, while the sum is 24.

Adding to 122100711720 its reverse (27117001221), we get a palindrome (149217712941).

The spelling of 122100711720 in words is "one hundred twenty-two billion, one hundred million, seven hundred eleven thousand, seven hundred twenty".