221303210234 has 8 divisors (see below), whose sum is σ = 340051274388. Its totient is φ = 107952785440.

The previous prime is 221303210231. The next prime is 221303210251. The reversal of 221303210234 is 432012303122.

It can be written as a sum of positive squares in 2 ways, for example, as 143832838009 + 77470372225 = 379253^2 + 278335^2 .

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

It is a super-2 number, since 2×221303210234² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221303210231) 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, 1349409737 + ... + 1349409900.

Almost surely, 2^221303210234 is an apocalyptic number.

221303210234 is a deficient number, since it is larger than the sum of its proper divisors (118748064154).

221303210234 is a wasteful number, since it uses less digits than its factorization.

221303210234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698819680.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 221303210234 its reverse (432012303122), we get a palindrome (653315513356).

The spelling of 221303210234 in words is "two hundred twenty-one billion, three hundred three million, two hundred ten thousand, two hundred thirty-four".