122219091720 has 192 divisors, whose sum is σ = 434233612800. Its totient is φ = 29566556160.

The previous prime is 122219091697. The next prime is 122219091733. The reversal of 122219091720 is 27190912221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1864624 + ... + 1929056.

It is an arithmetic number, because the mean of its divisors is an integer number (2261633400).

Almost surely, 2^122219091720 is an apocalyptic number.

122219091720 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 122219091720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217116806400).

122219091720 is an abundant number, since it is smaller than the sum of its proper divisors (312014521080).

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

122219091720 is a wasteful number, since it uses less digits than its factorization.

122219091720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64940 (or 64933 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The spelling of 122219091720 in words is "one hundred twenty-two billion, two hundred nineteen million, ninety-one thousand, seven hundred twenty".