10200012221 has 4 divisors (see below), whose sum is σ = 11657156832. Its totient is φ = 8742867612.

The previous prime is 10200012203. The next prime is 10200012227. The reversal of 10200012221 is 12221000201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10200012221 - 2¹⁰ = 10200011197 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 (10200012227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 728572295 + ... + 728572308.

It is an arithmetic number, because the mean of its divisors is an integer number (2914289208).

Almost surely, 2^10200012221 is an apocalyptic number.

It is an amenable number.

10200012221 is a deficient number, since it is larger than the sum of its proper divisors (1457144611).

10200012221 is an equidigital number, since it uses as much as digits as its factorization.

10200012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1457144610.

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

Adding to 10200012221 its reverse (12221000201), we get a palindrome (22421012422).

The spelling of 10200012221 in words is "ten billion, two hundred million, twelve thousand, two hundred twenty-one".