1122112020 has 48 divisors (see below), whose sum is σ = 3173038848. Its totient is φ = 296265600.

The previous prime is 1122112007. The next prime is 1122112021. The reversal of 1122112020 is 202112211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1122111987 and 1122112005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122112021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 86524 + ... + 98643.

It is an arithmetic number, because the mean of its divisors is an integer number (66104976).

Almost surely, 2^1122112020 is an apocalyptic number.

1122112020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122112020 is an abundant number, since it is smaller than the sum of its proper divisors (2050926828).

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

1122112020 is a wasteful number, since it uses less digits than its factorization.

1122112020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185280 (or 185278 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1122112020 is about 33497.9405337104. The cubic root of 1122112020 is about 1039.1511873474.

Adding to 1122112020 its reverse (202112211), we get a palindrome (1324224231).

The spelling of 1122112020 in words is "one billion, one hundred twenty-two million, one hundred twelve thousand, twenty".