221202222111102 has 128 divisors (see below), whose sum is σ = 473654880230400. Its totient is φ = 68701526175744.

The previous prime is 221202222111089. The next prime is 221202222111103. The reversal of 221202222111102 is 201111222202122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221202222111103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11477301738 + ... + 11477321010.

It is an arithmetic number, because the mean of its divisors is an integer number (3700428751800).

Almost surely, 2^{221202222111102} is an apocalyptic number.

221202222111102 is an abundant number, since it is smaller than the sum of its proper divisors (252452658119298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221202222111102 is a wasteful number, since it uses less digits than its factorization.

221202222111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24482.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221202222111102 its reverse (201111222202122), we get a palindrome (422313444313224).

The spelling of 221202222111102 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twenty-two million, one hundred eleven thousand, one hundred two".