11012021200 has 30 divisors (see below), whose sum is σ = 26456381894. Its totient is φ = 4404808320.

The previous prime is 11012021191. The next prime is 11012021219. The reversal of 11012021200 is 212021011.

It can be written as a sum of positive squares in 3 ways, for example, as 85082176 + 10926939024 = 9224^2 + 104532^2 .

It is a super-2 number, since 2×11012021200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13764627 + ... + 13765426.

Almost surely, 2^11012021200 is an apocalyptic number.

11012021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11012021200 is an abundant number, since it is smaller than the sum of its proper divisors (15444360694).

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

11012021200 is a wasteful number, since it uses less digits than its factorization.

11012021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27530071 (or 27530060 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11012021200 its reverse (212021011), we get a palindrome (11224042211).

The spelling of 11012021200 in words is "eleven billion, twelve million, twenty-one thousand, two hundred".