122221220000 has 240 divisors, whose sum is σ = 338617407744. Its totient is φ = 43008000000.

The previous prime is 122221219999. The next prime is 122221220053. The reversal of 122221220000 is 22122221.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6811040 + ... + 6828960.

Almost surely, 2^122221220000 is an apocalyptic number.

122221220000 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 122221220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169308703872).

122221220000 is an abundant number, since it is smaller than the sum of its proper divisors (216396187744).

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

122221220000 is a wasteful number, since it uses less digits than its factorization.

122221220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17993 (or 17970 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 122221220000 its reverse (22122221), we get a palindrome (122243342221).

The spelling of 122221220000 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand".