221021001222232 has 8 divisors (see below), whose sum is σ = 414414377291700. Its totient is φ = 110510500611112.

The previous prime is 221021001222199. The next prime is 221021001222313. The reversal of 221021001222232 is 232222100120122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13813812576382 + ... + 13813812576397.

Almost surely, 2^{221021001222232} is an apocalyptic number.

It is an amenable number.

221021001222232 is a deficient number, since it is larger than the sum of its proper divisors (193393376069468).

221021001222232 is a wasteful number, since it uses less digits than its factorization.

221021001222232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27627625152785 (or 27627625152781 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 221021001222232 its reverse (232222100120122), we get a palindrome (453243101342354).

The spelling of 221021001222232 in words is "two hundred twenty-one trillion, twenty-one billion, one million, two hundred twenty-two thousand, two hundred thirty-two".