10200311221 has 4 divisors (see below), whose sum is σ = 10200567052. Its totient is φ = 10200055392.

The previous prime is 10200311213. The next prime is 10200311309. The reversal of 10200311221 is 12211300201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6370434225 + 3829876996 = 79815^2 + 61886^2 .

It is a cyclic number.

It is not a de Polignac number, because 10200311221 - 2³ = 10200311213 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 (10200315221) 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, 53790 + ... + 152623.

It is an arithmetic number, because the mean of its divisors is an integer number (2550141763).

Almost surely, 2^10200311221 is an apocalyptic number.

It is an amenable number.

10200311221 is a deficient number, since it is larger than the sum of its proper divisors (255831).

10200311221 is an equidigital number, since it uses as much as digits as its factorization.

10200311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255830.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10200311221 its reverse (12211300201), we get a palindrome (22411611422).

The spelling of 10200311221 in words is "ten billion, two hundred million, three hundred eleven thousand, two hundred twenty-one".