221121323111102 has 16 divisors (see below), whose sum is σ = 331807387468032. Its totient is φ = 110518862746200.

The previous prime is 221121323111077. The next prime is 221121323111107. The reversal of 221121323111102 is 201111323121122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221121323111107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215977133 + ... + 216998535.

It is an arithmetic number, because the mean of its divisors is an integer number (20737961716752).

Almost surely, 2^{221121323111102} is an apocalyptic number.

221121323111102 is a deficient number, since it is larger than the sum of its proper divisors (110686064356930).

221121323111102 is a wasteful number, since it uses less digits than its factorization.

221121323111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062223.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 221121323111102 its reverse (201111323121122), we get a palindrome (422232646232224).

The spelling of 221121323111102 in words is "two hundred twenty-one trillion, one hundred twenty-one billion, three hundred twenty-three million, one hundred eleven thousand, one hundred two".