210101001221200 has 60 divisors (see below), whose sum is σ = 504775314022528. Its totient is φ = 84039125385600.

The previous prime is 210101001221191. The next prime is 210101001221201. The reversal of 210101001221200 is 2122100101012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101001221201) 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, 22633735 + ... + 30536665.

Almost surely, 2^{210101001221200} is an apocalyptic number.

210101001221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101001221200 is an abundant number, since it is smaller than the sum of its proper divisors (294674312801328).

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

210101001221200 is a wasteful number, since it uses less digits than its factorization.

210101001221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7969412 (or 7969401 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210101001221200 its reverse (2122100101012), we get a palindrome (212223101322212).

The spelling of 210101001221200 in words is "two hundred ten trillion, one hundred one billion, one million, two hundred twenty-one thousand, two hundred".