221210222102 has 32 divisors (see below), whose sum is σ = 356673536352. Its totient is φ = 102517645824.

The previous prime is 221210222083. The next prime is 221210222113. The reversal of 221210222102 is 201222012122.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10224248 + ... + 10245860.

It is an arithmetic number, because the mean of its divisors is an integer number (11146048011).

Almost surely, 2^221210222102 is an apocalyptic number.

221210222102 is a deficient number, since it is larger than the sum of its proper divisors (135463314250).

221210222102 is a wasteful number, since it uses less digits than its factorization.

221210222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26192.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221210222102 its reverse (201222012122), we get a palindrome (422432234224).

The spelling of 221210222102 in words is "two hundred twenty-one billion, two hundred ten million, two hundred twenty-two thousand, one hundred two".