1001198120 has 32 divisors (see below), whose sum is σ = 2425981320. Its totient is φ = 369672960.

The previous prime is 1001198069. The next prime is 1001198123. The reversal of 1001198120 is 218911001.

It can be written as a sum of positive squares in 4 ways, for example, as 604471396 + 396726724 = 24586^2 + 19918^2 .

It is not an unprimeable number, because it can be changed into a prime (1001198123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 962171 + ... + 963210.

Almost surely, 2^1001198120 is an apocalyptic number.

1001198120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001198120 is an abundant number, since it is smaller than the sum of its proper divisors (1424783200).

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

1001198120 is a wasteful number, since it uses less digits than its factorization.

1001198120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1925405 (or 1925401 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 23.

The square root of 1001198120 is about 31641.7148713530. The cubic root of 1001198120 is about 1000.3992139404.

The spelling of 1001198120 in words is "one billion, one million, one hundred ninety-eight thousand, one hundred twenty".