1121133211220 has 48 divisors (see below), whose sum is σ = 2568701370816. Its totient is φ = 407639232000.

The previous prime is 1121133211207. The next prime is 1121133211241. The reversal of 1121133211220 is 221123311211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1121133211192 and 1121133211201.

It is a congruent number.

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, 1719740 + ... + 2280300.

It is an arithmetic number, because the mean of its divisors is an integer number (53514611892).

Almost surely, 2^{1121133211220} is an apocalyptic number.

1121133211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121133211220 is an abundant number, since it is smaller than the sum of its proper divisors (1447568159596).

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

1121133211220 is a wasteful number, since it uses less digits than its factorization.

1121133211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569672 (or 569670 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1121133211220 its reverse (221123311211), we get a palindrome (1342256522431).

Subtracting from 1121133211220 its reverse (221123311211), we obtain a palindrome (900009900009).

The spelling of 1121133211220 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-three million, two hundred eleven thousand, two hundred twenty".