120121111110000 has 800 divisors, whose sum is σ = 520638290016768. Its totient is φ = 23040207360000.

The previous prime is 120121111109903. The next prime is 120121111110029. The reversal of 120121111110000 is 11111121021.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 28029982 + ... + 32030018.

Almost surely, 2^{120121111110000} is an apocalyptic number.

120121111110000 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 120121111110000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260319145008384).

120121111110000 is an abundant number, since it is smaller than the sum of its proper divisors (400517178906768).

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

120121111110000 is a wasteful number, since it uses less digits than its factorization.

120121111110000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000099 (or 4000078 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 120121111110000 its reverse (11111121021), we get a palindrome (120132222231021).

The spelling of 120121111110000 in words is "one hundred twenty trillion, one hundred twenty-one billion, one hundred eleven million, one hundred ten thousand".