211100121200 has 60 divisors (see below), whose sum is σ = 507230683968. Its totient is φ = 84429619200.

The previous prime is 211100121119. The next prime is 211100121209. The reversal of 211100121200 is 2121001112.

It is a super-2 number, since 2×211100121200² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211100121209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3761345 + ... + 3817055.

Almost surely, 2^211100121200 is an apocalyptic number.

211100121200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100121200 is an abundant number, since it is smaller than the sum of its proper divisors (296130562768).

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

211100121200 is a wasteful number, since it uses less digits than its factorization.

211100121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65202 (or 65191 counting only the distinct ones).

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

Adding to 211100121200 its reverse (2121001112), we get a palindrome (213221122312).

The spelling of 211100121200 in words is "two hundred eleven billion, one hundred million, one hundred twenty-one thousand, two hundred".