1112121020 has 24 divisors (see below), whose sum is σ = 2336602464. Its totient is φ = 444629696.

The previous prime is 1112120987. The next prime is 1112121071. The reversal of 1112121020 is 201212111.

It is a junction number, because it is equal to n+sod(n) for n = 1112120992 and 1112121010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31697 + ... + 56823.

It is an arithmetic number, because the mean of its divisors is an integer number (97358436).

Almost surely, 2^1112121020 is an apocalyptic number.

1112121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1112121020 is an abundant number, since it is smaller than the sum of its proper divisors (1224481444).

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

1112121020 is a wasteful number, since it uses less digits than its factorization.

1112121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27349 (or 27347 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1112121020 is about 33348.4785260137. The cubic root of 1112121020 is about 1036.0578757985.

Adding to 1112121020 its reverse (201212111), we get a palindrome (1313333131).

The spelling of 1112121020 in words is "one billion, one hundred twelve million, one hundred twenty-one thousand, twenty".