1201120111220 has 12 divisors (see below), whose sum is σ = 2522352233604. Its totient is φ = 480448044480.

The previous prime is 1201120111187. The next prime is 1201120111237. The reversal of 1201120111220 is 221110211021.

It can be written as a sum of positive squares in 2 ways, for example, as 831003620836 + 370116490384 = 911594^2 + 608372^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1201120111195 and 1201120111204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30028002761 + ... + 30028002800.

It is an arithmetic number, because the mean of its divisors is an integer number (210196019467).

Almost surely, 2^{1201120111220} is an apocalyptic number.

1201120111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201120111220 is an abundant number, since it is smaller than the sum of its proper divisors (1321232122384).

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

1201120111220 is a wasteful number, since it uses less digits than its factorization.

1201120111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60056005570 (or 60056005568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1201120111220 its reverse (221110211021), we get a palindrome (1422230322241).

The spelling of 1201120111220 in words is "one trillion, two hundred one billion, one hundred twenty million, one hundred eleven thousand, two hundred twenty".