1122013031220 has 72 divisors (see below), whose sum is σ = 3416682624264. Its totient is φ = 298039246848.

The previous prime is 1122013031143. The next prime is 1122013031267. The reversal of 1122013031220 is 221303102211.

1122013031220 is a `hidden beast` number, since 1 + 1 + 220 + 130 + 312 + 2 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 700599132324 + 421413898896 = 837018^2 + 649164^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1122013031193 and 1122013031202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12080989 + ... + 12173508.

It is an arithmetic number, because the mean of its divisors is an integer number (47453925337).

Almost surely, 2^{1122013031220} is an apocalyptic number.

1122013031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122013031220 is an abundant number, since it is smaller than the sum of its proper divisors (2294669593044).

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

1122013031220 is a wasteful number, since it uses less digits than its factorization.

1122013031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24254769 (or 24254764 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1122013031220 its reverse (221303102211), we get a palindrome (1343316133431).

The spelling of 1122013031220 in words is "one trillion, one hundred twenty-two billion, thirteen million, thirty-one thousand, two hundred twenty".