210101220200 has 48 divisors (see below), whose sum is σ = 488548498380. Its totient is φ = 84029621760.

The previous prime is 210101220181. The next prime is 210101220269. The reversal of 210101220200 is 2022101012.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 2615504164 + 207485716036 = 51142^2 + 455506^2 .

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, 1582802 + ... + 1710398.

Almost surely, 2^210101220200 is an apocalyptic number.

210101220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210101220200 is an abundant number, since it is smaller than the sum of its proper divisors (278447278180).

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

210101220200 is a wasteful number, since it uses less digits than its factorization.

210101220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135846 (or 135837 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 210101220200 its reverse (2022101012), we get a palindrome (212123321212).

It can be divided in two parts, 2101012 and 20200, that added together give a palindrome (2121212).

The spelling of 210101220200 in words is "two hundred ten billion, one hundred one million, two hundred twenty thousand, two hundred".