221101210102 has 16 divisors (see below), whose sum is σ = 341180579520. Its totient is φ = 107408688448.

The previous prime is 221101210091. The next prime is 221101210117. The reversal of 221101210102 is 201012101122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8571577 + ... + 8597332.

It is an arithmetic number, because the mean of its divisors is an integer number (21323786220).

Almost surely, 2^221101210102 is an apocalyptic number.

221101210102 is a deficient number, since it is larger than the sum of its proper divisors (120079369418).

221101210102 is a wasteful number, since it uses less digits than its factorization.

221101210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17169095.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221101210102 its reverse (201012101122), we get a palindrome (422113311224).

The spelling of 221101210102 in words is "two hundred twenty-one billion, one hundred one million, two hundred ten thousand, one hundred two".