120111201021220 has 48 divisors (see below), whose sum is σ = 252583364256048. Its totient is φ = 47977846801920.

The previous prime is 120111201021173. The next prime is 120111201021281. The reversal of 120111201021220 is 22120102111021.

It can be written as a sum of positive squares in 8 ways, for example, as 25867334968036 + 94243866053184 = 5085994^2 + 9707928^2 .

It is a super-2 number, since 2×120111201021220² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120111201021194 and 120111201021203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1052838822 + ... + 1052952898.

It is an arithmetic number, because the mean of its divisors is an integer number (5262153422001).

Almost surely, 2^{120111201021220} is an apocalyptic number.

120111201021220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120111201021220 is an abundant number, since it is smaller than the sum of its proper divisors (132472163234828).

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

120111201021220 is a wasteful number, since it uses less digits than its factorization.

120111201021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186640 (or 186638 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120111201021220 its reverse (22120102111021), we get a palindrome (142231303132241).

The spelling of 120111201021220 in words is "one hundred twenty trillion, one hundred eleven billion, two hundred one million, twenty-one thousand, two hundred twenty".