211121011220200 has 96 divisors (see below), whose sum is σ = 491442063741720. Its totient is φ = 84347648000000.

The previous prime is 211121011220183. The next prime is 211121011220233. The reversal of 211121011220200 is 2022110121112.

It can be written as a sum of positive squares in 12 ways, for example, as 10957993401796 + 200163017818404 = 3310286^2 + 14147898^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5483500950 + ... + 5483539450.

Almost surely, 2^{211121011220200} is an apocalyptic number.

211121011220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211121011220200 is an abundant number, since it is smaller than the sum of its proper divisors (280321052521520).

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

211121011220200 is a wasteful number, since it uses less digits than its factorization.

211121011220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70519 (or 70510 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211121011220200 its reverse (2022110121112), we get a palindrome (213143121341312).

The spelling of 211121011220200 in words is "two hundred eleven trillion, one hundred twenty-one billion, eleven million, two hundred twenty thousand, two hundred".