221001221021102 has 8 divisors (see below), whose sum is σ = 342195439000512. Its totient is φ = 106936074687600.

The previous prime is 221001221021093. The next prime is 221001221021131. The reversal of 221001221021102 is 201120122100122.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1782267911399 + ... + 1782267911522.

It is an arithmetic number, because the mean of its divisors is an integer number (42774429875064).

Almost surely, 2^{221001221021102} is an apocalyptic number.

221001221021102 is a deficient number, since it is larger than the sum of its proper divisors (121194217979410).

221001221021102 is a wasteful number, since it uses less digits than its factorization.

221001221021102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564535822954.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221001221021102 its reverse (201120122100122), we get a palindrome (422121343121224).

The spelling of 221001221021102 in words is "two hundred twenty-one trillion, one billion, two hundred twenty-one million, twenty-one thousand, one hundred two".