11200020020 has 48 divisors (see below), whose sum is σ = 27535673088. Its totient is φ = 3746346240.

The previous prime is 11200020017. The next prime is 11200020037. The reversal of 11200020020 is 2002000211.

11200020020 is a modest number, since divided by 20020 gives 11200 as remainder.

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, 969872 + ... + 981351.

It is an arithmetic number, because the mean of its divisors is an integer number (573659856).

Almost surely, 2^11200020020 is an apocalyptic number.

11200020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11200020020 is an abundant number, since it is smaller than the sum of its proper divisors (16335653068).

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

11200020020 is a wasteful number, since it uses less digits than its factorization.

11200020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951280 (or 1951278 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 11200020020 its reverse (2002000211), we get a palindrome (13202020231).

The spelling of 11200020020 in words is "eleven billion, two hundred million, twenty thousand, twenty".