221201122102 has 16 divisors (see below), whose sum is σ = 339452625312. Its totient is φ = 108077818240.

The previous prime is 221201122073. The next prime is 221201122123. The reversal of 221201122102 is 201221102122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6876673 + ... + 6908764.

It is an arithmetic number, because the mean of its divisors is an integer number (21215789082).

Almost surely, 2^221201122102 is an apocalyptic number.

221201122102 is a deficient number, since it is larger than the sum of its proper divisors (118251503210).

221201122102 is a wasteful number, since it uses less digits than its factorization.

221201122102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13785623.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221201122102 its reverse (201221102122), we get a palindrome (422422224224).

The spelling of 221201122102 in words is "two hundred twenty-one billion, two hundred one million, one hundred twenty-two thousand, one hundred two".