111012202221 has 32 divisors (see below), whose sum is σ = 151242123648. Its totient is φ = 72416747520.

The previous prime is 111012202207. The next prime is 111012202237. The reversal of 111012202221 is 122202210111.

It is not a de Polignac number, because 111012202221 - 2⁹ = 111012201709 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111012202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111012202241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10554261 + ... + 10564773.

It is an arithmetic number, because the mean of its divisors is an integer number (4726316364).

Almost surely, 2^111012202221 is an apocalyptic number.

It is an amenable number.

111012202221 is a deficient number, since it is larger than the sum of its proper divisors (40229921427).

111012202221 is a wasteful number, since it uses less digits than its factorization.

111012202221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11021.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111012202221 its reverse (122202210111), we get a palindrome (233214412332).

The spelling of 111012202221 in words is "one hundred eleven billion, twelve million, two hundred two thousand, two hundred twenty-one".