120111211100220 has 24 divisors (see below), whose sum is σ = 336311391080784. Its totient is φ = 32029656293376.

The previous prime is 120111211100213. The next prime is 120111211100249. The reversal of 120111211100220 is 22001112111021.

It is a happy number.

It is a super-2 number, since 2×120111211100220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 120111211100220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1000926759109 + ... + 1000926759228.

It is an arithmetic number, because the mean of its divisors is an integer number (14012974628366).

Almost surely, 2^{120111211100220} is an apocalyptic number.

120111211100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120111211100220 is an abundant number, since it is smaller than the sum of its proper divisors (216200179980564).

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

120111211100220 is a wasteful number, since it uses less digits than its factorization.

120111211100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2001853518349 (or 2001853518347 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120111211100220 its reverse (22001112111021), we get a palindrome (142112323211241).

The spelling of 120111211100220 in words is "one hundred twenty trillion, one hundred eleven billion, two hundred eleven million, one hundred thousand, two hundred twenty".