1121110201220 has 12 divisors (see below), whose sum is σ = 2354331422604. Its totient is φ = 448444080480.

The previous prime is 1121110201213. The next prime is 1121110201241. The reversal of 1121110201220 is 221020111211.

It can be written as a sum of positive squares in 2 ways, for example, as 757373353984 + 363736847236 = 870272^2 + 603106^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1121110201195 and 1121110201204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28027755011 + ... + 28027755050.

It is an arithmetic number, because the mean of its divisors is an integer number (196194285217).

Almost surely, 2^{1121110201220} is an apocalyptic number.

1121110201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121110201220 is an abundant number, since it is smaller than the sum of its proper divisors (1233221221384).

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

1121110201220 is a wasteful number, since it uses less digits than its factorization.

1121110201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56055510070 (or 56055510068 counting only the distinct ones).

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

Adding to 1121110201220 its reverse (221020111211), we get a palindrome (1342130312431).

Subtracting from 1121110201220 its reverse (221020111211), we obtain a palindrome (900090090009).

The spelling of 1121110201220 in words is "one trillion, one hundred twenty-one billion, one hundred ten million, two hundred one thousand, two hundred twenty".