20001001120 has 24 divisors (see below), whose sum is σ = 47252365524. Its totient is φ = 8000400384.

The previous prime is 20001001081. The next prime is 20001001157. The reversal of 20001001120 is 2110010002.

It can be written as a sum of positive squares in 2 ways, for example, as 19310993296 + 690007824 = 138964^2 + 26268^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62502969 + ... + 62503288.

Almost surely, 2^20001001120 is an apocalyptic number.

20001001120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20001001120 is an abundant number, since it is smaller than the sum of its proper divisors (27251364404).

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

20001001120 is a wasteful number, since it uses less digits than its factorization.

20001001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125006272 (or 125006264 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 20001001120 its reverse (2110010002), we get a palindrome (22111011122).

The spelling of 20001001120 in words is "twenty billion, one million, one thousand, one hundred twenty".