120011222222100 has 576 divisors, whose sum is σ = 434845528104960. Its totient is φ = 28130457600000.

The previous prime is 120011222222077. The next prime is 120011222222197. The reversal of 120011222222100 is 1222222110021.

It is a happy number.

120011222222100 is a `hidden beast` number, since 1 + 200 + 11 + 22 + 222 + 210 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1061510575 + ... + 1061623625.

It is an arithmetic number, because the mean of its divisors is an integer number (754940152960).

Almost surely, 2^{120011222222100} is an apocalyptic number.

120011222222100 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 120011222222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217422764052480).

120011222222100 is an abundant number, since it is smaller than the sum of its proper divisors (314834305882860).

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

120011222222100 is a wasteful number, since it uses less digits than its factorization.

120011222222100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114269 (or 114256 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 120011222222100 its reverse (1222222110021), we get a palindrome (121233444332121).

The spelling of 120011222222100 in words is "one hundred twenty trillion, eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred".