1210100200221 has 32 divisors (see below), whose sum is σ = 1776057901056. Its totient is φ = 732829772400.

The previous prime is 1210100200217. The next prime is 1210100200241. The reversal of 1210100200221 is 1220020010121.

It is not a de Polignac number, because 1210100200221 - 2² = 1210100200217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210100200197 and 1210100200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210100200241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5102916 + ... + 5334786.

It is an arithmetic number, because the mean of its divisors is an integer number (55501809408).

Almost surely, 2^{1210100200221} is an apocalyptic number.

1210100200221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1210100200221 is a deficient number, since it is larger than the sum of its proper divisors (565957700835).

1210100200221 is a wasteful number, since it uses less digits than its factorization.

1210100200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233214 (or 233192 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1210100200221 its reverse (1220020010121), we get a palindrome (2430120210342).

The spelling of 1210100200221 in words is "one trillion, two hundred ten billion, one hundred million, two hundred thousand, two hundred twenty-one".