221312333331010 has 16 divisors (see below), whose sum is σ = 398362860315000. Its totient is φ = 88524786594816.

The previous prime is 221312333331007. The next prime is 221312333331031. The reversal of 221312333331010 is 10133333213122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 201287057379489 + 20025275951521 = 14187567^2 + 4474961^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221312333331010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11899935 + ... + 24170914.

Almost surely, 2^{221312333331010} is an apocalyptic number.

221312333331010 is a deficient number, since it is larger than the sum of its proper divisors (177050526983990).

221312333331010 is a wasteful number, since it uses less digits than its factorization.

221312333331010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36684405.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 221312333331010 its reverse (10133333213122), we get a palindrome (231445666544132).

The spelling of 221312333331010 in words is "two hundred twenty-one trillion, three hundred twelve billion, three hundred thirty-three million, three hundred thirty-one thousand, ten".