11021121200 has 60 divisors (see below), whose sum is σ = 26488819488. Its totient is φ = 4406688000.

The previous prime is 11021121191. The next prime is 11021121211. The reversal of 11021121200 is 212112011.

It is a super-2 number, since 2×11021121200² (a number of 21 digits) contains 22 as substring.

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, 1537625 + ... + 1544775.

Almost surely, 2^11021121200 is an apocalyptic number.

11021121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021121200 is an abundant number, since it is smaller than the sum of its proper divisors (15467698288).

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

11021121200 is a wasteful number, since it uses less digits than its factorization.

11021121200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11022 (or 11011 counting only the distinct ones).

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

Adding to 11021121200 its reverse (212112011), we get a palindrome (11233233211).

The spelling of 11021121200 in words is "eleven billion, twenty-one million, one hundred twenty-one thousand, two hundred".