11990100020 has 48 divisors (see below), whose sum is σ = 26006593536. Its totient is φ = 4638624000.

The previous prime is 11990100013. The next prime is 11990100047. The reversal of 11990100020 is 2000109911.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1304240 + ... + 1313400.

It is an arithmetic number, because the mean of its divisors is an integer number (541804032).

Almost surely, 2^11990100020 is an apocalyptic number.

11990100020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11990100020 is an abundant number, since it is smaller than the sum of its proper divisors (14016493516).

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

11990100020 is a wasteful number, since it uses less digits than its factorization.

11990100020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11312 (or 11310 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 23.

Adding to 11990100020 its reverse (2000109911), we get a palindrome (13990209931).

The spelling of 11990100020 in words is "eleven billion, nine hundred ninety million, one hundred thousand, twenty".