221211432201 has 8 divisors (see below), whose sum is σ = 295514698464. Its totient is φ = 147191227040.

The previous prime is 221211432191. The next prime is 221211432217. The reversal of 221211432201 is 102234112122.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 221211432201 - 2¹⁵ = 221211399433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221211432251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70763451 + ... + 70766576.

It is an arithmetic number, because the mean of its divisors is an integer number (36939337308).

Almost surely, 2^221211432201 is an apocalyptic number.

It is an amenable number.

221211432201 is a deficient number, since it is larger than the sum of its proper divisors (74303266263).

221211432201 is a wasteful number, since it uses less digits than its factorization.

221211432201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141530551.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 221211432201 its reverse (102234112122), we get a palindrome (323445544323).

The spelling of 221211432201 in words is "two hundred twenty-one billion, two hundred eleven million, four hundred thirty-two thousand, two hundred one".