120021110000000 has 384 divisors, whose sum is σ = 328524225382080. Its totient is φ = 43643600000000.

The previous prime is 120021109999961. The next prime is 120021110000009. The reversal of 120021110000000 is 11120021.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021110000009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1209950405 + ... + 1210049595.

Almost surely, 2^{120021110000000} is an apocalyptic number.

120021110000000 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 120021110000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164262112691040).

120021110000000 is an abundant number, since it is smaller than the sum of its proper divisors (208503115382080).

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

120021110000000 is an frugal number, since it uses more digits than its factorization.

120021110000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99262 (or 99209 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 120021110000000 its reverse (11120021), we get a palindrome (120021121120021).

It can be divided in two parts, 1200211 and 10000000, that added together give a palindrome (11200211).

The spelling of 120021110000000 in words is "one hundred twenty trillion, twenty-one billion, one hundred ten million", and thus it is an aban number.