1201112101220 has 48 divisors (see below), whose sum is σ = 2659740283200. Its totient is φ = 454361063040.

The previous prime is 1201112101219. The next prime is 1201112101237. The reversal of 1201112101220 is 221012111021.

It is a junction number, because it is equal to n+sod(n) for n = 1201112101195 and 1201112101204.

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, 2550815 + ... + 2984774.

It is an arithmetic number, because the mean of its divisors is an integer number (55411255900).

Almost surely, 2^{1201112101220} is an apocalyptic number.

1201112101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201112101220 is an abundant number, since it is smaller than the sum of its proper divisors (1458628181980).

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

1201112101220 is a wasteful number, since it uses less digits than its factorization.

1201112101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536188 (or 5536186 counting only the distinct ones).

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

Adding to 1201112101220 its reverse (221012111021), we get a palindrome (1422124212241).

The spelling of 1201112101220 in words is "one trillion, two hundred one billion, one hundred twelve million, one hundred one thousand, two hundred twenty".