11012121200 has 60 divisors (see below), whose sum is σ = 26690860128. Its totient is φ = 4365849600.

The previous prime is 11012121199. The next prime is 11012121221. The reversal of 11012121200 is 212121011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76616 + ... + 167015.

Almost surely, 2^11012121200 is an apocalyptic number.

11012121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11012121200 is an abundant number, since it is smaller than the sum of its proper divisors (15678738928).

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

11012121200 is a wasteful number, since it uses less digits than its factorization.

11012121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243762 (or 243751 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11012121200 its reverse (212121011), we get a palindrome (11224242211).

The spelling of 11012121200 in words is "eleven billion, twelve million, one hundred twenty-one thousand, two hundred".