221202112211102 has 64 divisors (see below), whose sum is σ = 363549683911680. Its totient is φ = 100107635097600.

The previous prime is 221202112211009. The next prime is 221202112211131. The reversal of 221202112211102 is 201112211202122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28798604702 + ... + 28798612382.

It is an arithmetic number, because the mean of its divisors is an integer number (5680463811120).

Almost surely, 2^{221202112211102} is an apocalyptic number.

221202112211102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221202112211102 is a deficient number, since it is larger than the sum of its proper divisors (142347571700578).

221202112211102 is a wasteful number, since it uses less digits than its factorization.

221202112211102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12369.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 221202112211102 its reverse (201112211202122), we get a palindrome (422314323413224).

The spelling of 221202112211102 in words is "two hundred twenty-one trillion, two hundred two billion, one hundred twelve million, two hundred eleven thousand, one hundred two".