221131111111202 has 96 divisors (see below), whose sum is σ = 354898282939200. Its totient is φ = 103313938710528.

The previous prime is 221131111111201. The next prime is 221131111111231. The reversal of 221131111111202 is 202111111131122.

It is not an unprimeable number, because it can be changed into a prime (221131111111201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94540875749 + ... + 94540878087.

It is an arithmetic number, because the mean of its divisors is an integer number (3696857113950).

Almost surely, 2^{221131111111202} is an apocalyptic number.

221131111111202 is a deficient number, since it is larger than the sum of its proper divisors (133767171827998).

221131111111202 is a wasteful number, since it uses less digits than its factorization.

221131111111202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4308 (or 4291 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 221131111111202 its reverse (202111111131122), we get a palindrome (423242222242324).

The spelling of 221131111111202 in words is "two hundred twenty-one trillion, one hundred thirty-one billion, one hundred eleven million, one hundred eleven thousand, two hundred two".