122120011221000 has 256 divisors, whose sum is σ = 410565253512960. Its totient is φ = 30042580377600.

The previous prime is 122120011220941. The next prime is 122120011221029. The reversal of 122120011221000 is 122110021221.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65260407 + ... + 67105593.

It is an arithmetic number, because the mean of its divisors is an integer number (1603770521535).

Almost surely, 2^{122120011221000} is an apocalyptic number.

122120011221000 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 122120011221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205282626756480).

122120011221000 is an abundant number, since it is smaller than the sum of its proper divisors (288445242291960).

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

122120011221000 is a wasteful number, since it uses less digits than its factorization.

122120011221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1846921 (or 1846907 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 122120011221000 its reverse (122110021221), we get a palindrome (122242121242221).

The spelling of 122120011221000 in words is "one hundred twenty-two trillion, one hundred twenty billion, eleven million, two hundred twenty-one thousand".