1120101900 has 72 divisors (see below), whose sum is σ = 3266457600. Its totient is φ = 296331840.

The previous prime is 1120101869. The next prime is 1120101901. The reversal of 1120101900 is 91010211.

It is a super-2 number, since 2×1120101900² = 2509256532767220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1120101900.

It is not an unprimeable number, because it can be changed into a prime (1120101901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23401 + ... + 52799.

Almost surely, 2^1120101900 is an apocalyptic number.

1120101900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120101900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1633228800).

1120101900 is an abundant number, since it is smaller than the sum of its proper divisors (2146355700).

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

1120101900 is a wasteful number, since it uses less digits than its factorization.

1120101900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29543 (or 29536 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 1120101900 is about 33467.9234491774. The cubic root of 1120101900 is about 1038.5303143645.

The spelling of 1120101900 in words is "one billion, one hundred twenty million, one hundred one thousand, nine hundred".