1121322020 has 48 divisors (see below), whose sum is σ = 2898190848. Its totient is φ = 354879360.

The previous prime is 1121321977. The next prime is 1121322047. The reversal of 1121322020 is 202231211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 1121321986 and 1121322004.

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, 306236 + ... + 309875.

It is an arithmetic number, because the mean of its divisors is an integer number (60378976).

Almost surely, 2^1121322020 is an apocalyptic number.

1121322020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121322020 is an abundant number, since it is smaller than the sum of its proper divisors (1776868828).

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

1121322020 is a wasteful number, since it uses less digits than its factorization.

1121322020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616140 (or 616138 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1121322020 is about 33486.1466878469. The cubic root of 1121322020 is about 1038.9072657212.

Adding to 1121322020 its reverse (202231211), we get a palindrome (1323553231).

It can be divided in two parts, 11213 and 22020, that added together give a palindrome (33233).

The spelling of 1121322020 in words is "one billion, one hundred twenty-one million, three hundred twenty-two thousand, twenty".