221121121102 has 8 divisors (see below), whose sum is σ = 379064779056. Its totient is φ = 94766194752.

The previous prime is 221121121093. The next prime is 221121121181. The reversal of 221121121102 is 201121121122.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7897182883 + ... + 7897182910.

It is an arithmetic number, because the mean of its divisors is an integer number (47383097382).

Almost surely, 2^221121121102 is an apocalyptic number.

221121121102 is a deficient number, since it is larger than the sum of its proper divisors (157943657954).

221121121102 is a wasteful number, since it uses less digits than its factorization.

221121121102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15794365802.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 221121121102 its reverse (201121121122), we get a palindrome (422242242224).

The spelling of 221121121102 in words is "two hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred two".