221122121102 has 16 divisors (see below), whose sum is σ = 332652707712. Its totient is φ = 110238255480.

The previous prime is 221122121071. The next prime is 221122121111. The reversal of 221122121102 is 201121221122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1114103 + ... + 1297485.

It is an arithmetic number, because the mean of its divisors is an integer number (20790794232).

Almost surely, 2^221122121102 is an apocalyptic number.

221122121102 is a deficient number, since it is larger than the sum of its proper divisors (111530586610).

221122121102 is a wasteful number, since it uses less digits than its factorization.

221122121102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185143.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221122121102 its reverse (201121221122), we get a palindrome (422243342224).

The spelling of 221122121102 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred twenty-one thousand, one hundred two".