221102010221221 has 8 divisors (see below), whose sum is σ = 228319549710560. Its totient is φ = 213978817653552.

The previous prime is 221102010221101. The next prime is 221102010221227. The reversal of 221102010221221 is 122122010201122.

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 221102010221221 - 2⁹ = 221102010220709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102010221227) 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, 23586725655 + ... + 23586735028.

It is an arithmetic number, because the mean of its divisors is an integer number (28539943713820).

Almost surely, 2^{221102010221221} is an apocalyptic number.

It is an amenable number.

221102010221221 is a deficient number, since it is larger than the sum of its proper divisors (7217539489339).

221102010221221 is a wasteful number, since it uses less digits than its factorization.

221102010221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47173460835.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221102010221221 its reverse (122122010201122), we get a palindrome (343224020422343).

The spelling of 221102010221221 in words is "two hundred twenty-one trillion, one hundred two billion, ten million, two hundred twenty-one thousand, two hundred twenty-one".