122221110000 has 800 divisors, whose sum is σ = 459923777280. Its totient is φ = 27648000000.

The previous prime is 122221109953. The next prime is 122221110007. The reversal of 122221110000 is 11122221.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221110007) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 633269904 + ... + 633270096.

Almost surely, 2^122221110000 is an apocalyptic number.

122221110000 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 122221110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229961888640).

122221110000 is an abundant number, since it is smaller than the sum of its proper divisors (337702667280).

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

122221110000 is a wasteful number, since it uses less digits than its factorization.

122221110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355 (or 334 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 122221110000 its reverse (11122221), we get a palindrome (122232232221).

It can be divided in two parts, 122221 and 110000, that added together give a triangular number (232221 = T₆₈₁).

The spelling of 122221110000 in words is "one hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand".