221001200000210 has 64 divisors (see below), whose sum is σ = 472275789235200. Its totient is φ = 72852913093632.

The previous prime is 221001200000177. The next prime is 221001200000249. The reversal of 221001200000210 is 12000002100122.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 221001200000191 and 221001200000200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227271287 + ... + 228241626.

It is an arithmetic number, because the mean of its divisors is an integer number (7379309206800).

Almost surely, 2^{221001200000210} is an apocalyptic number.

221001200000210 is an abundant number, since it is smaller than the sum of its proper divisors (251274589234990).

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

221001200000210 is a wasteful number, since it uses less digits than its factorization.

221001200000210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455513195.

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

Adding to 221001200000210 its reverse (12000002100122), we get a palindrome (233001202100332).

The spelling of 221001200000210 in words is "two hundred twenty-one trillion, one billion, two hundred million, two hundred ten", and thus it is an aban number.