221222102 has 8 divisors (see below), whose sum is σ = 332069976. Its totient is φ = 110532112.

The previous prime is 221222087. The next prime is 221222123. The reversal of 221222102 is 201222122.

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, 35903 + ... + 41610.

It is an arithmetic number, because the mean of its divisors is an integer number (41508747).

Almost surely, 2^221222102 is an apocalyptic number.

221222102 is a deficient number, since it is larger than the sum of its proper divisors (110847874).

221222102 is a wasteful number, since it uses less digits than its factorization.

221222102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78942.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 221222102 is about 14873.5369700687. The cubic root of 221222102 is about 604.7968281651.

Adding to 221222102 its reverse (201222122), we get a palindrome (422444224).

The spelling of 221222102 in words is "two hundred twenty-one million, two hundred twenty-two thousand, one hundred two".