221343021050 has 24 divisors (see below), whose sum is σ = 411864726396. Its totient is φ = 88501357440.

The previous prime is 221343021041. The next prime is 221343021059. The reversal of 221343021050 is 50120343122.

It is an interprime number because it is at equal distance from previous prime (221343021041) and next prime (221343021059).

It can be written as a sum of positive squares in 6 ways, for example, as 65958053329 + 155384967721 = 256823^2 + 394189^2 .

It is not an unprimeable number, because it can be changed into a prime (221343021059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 771389 + ... + 1018688.

Almost surely, 2^221343021050 is an apocalyptic number.

221343021050 is a deficient number, since it is larger than the sum of its proper divisors (190521705346).

221343021050 is a wasteful number, since it uses less digits than its factorization.

221343021050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792562 (or 1792557 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 221343021050 its reverse (50120343122), we get a palindrome (271463364172).

The spelling of 221343021050 in words is "two hundred twenty-one billion, three hundred forty-three million, twenty-one thousand, fifty".