1210200221 has 8 divisors (see below), whose sum is σ = 1225282944. Its totient is φ = 1195210800.

The previous prime is 1210200217. The next prime is 1210200241. The reversal of 1210200221 is 1220020121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210200221 - 2² = 1210200217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210200241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2960 + ... + 49286.

It is an arithmetic number, because the mean of its divisors is an integer number (153160368).

Almost surely, 2^1210200221 is an apocalyptic number.

It is an amenable number.

1210200221 is a deficient number, since it is larger than the sum of its proper divisors (15082723).

1210200221 is a wasteful number, since it uses less digits than its factorization.

1210200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46651.

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

The square root of 1210200221 is about 34787.9321173306. The cubic root of 1210200221 is about 1065.6610092675.

Adding to 1210200221 its reverse (1220020121), we get a palindrome (2430220342).

The spelling of 1210200221 in words is "one billion, two hundred ten million, two hundred thousand, two hundred twenty-one".