1021113120 has 48 divisors (see below), whose sum is σ = 3216507840. Its totient is φ = 272296704.

The previous prime is 1021113101. The next prime is 1021113151. The reversal of 1021113120 is 213111201.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1021113120² = 2085344007672268800, which contains 22 as substring.

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 = 1021113096 and 1021113105.

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, 1063180 + ... + 1064139.

It is an arithmetic number, because the mean of its divisors is an integer number (67010580).

Almost surely, 2^1021113120 is an apocalyptic number.

1021113120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021113120 is an abundant number, since it is smaller than the sum of its proper divisors (2195394720).

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

1021113120 is a wasteful number, since it uses less digits than its factorization.

1021113120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127337 (or 2127329 counting only the distinct ones).

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

The square root of 1021113120 is about 31954.8606631292. The cubic root of 1021113120 is about 1006.9887502536.

Adding to 1021113120 its reverse (213111201), we get a palindrome (1234224321).

The spelling of 1021113120 in words is "one billion, twenty-one million, one hundred thirteen thousand, one hundred twenty".