111221000021111 has 8 divisors (see below), whose sum is σ = 112329646519824. Its totient is φ = 110112499571200.

The previous prime is 111221000021063. The next prime is 111221000021113. The reversal of 111221000021111 is 111120000122111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111221000021111 - 2³⁸ = 110946122114167 is a prime.

It is a super-2 number, since 2×111221000021111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111221000021113) 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 7 ways as a sum of consecutive naturals, for example, 34981226 + ... + 38027991.

It is an arithmetic number, because the mean of its divisors is an integer number (14041205814978).

Almost surely, 2^{111221000021111} is an apocalyptic number.

111221000021111 is a deficient number, since it is larger than the sum of its proper divisors (1108646498713).

111221000021111 is a wasteful number, since it uses less digits than its factorization.

111221000021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73024401.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111221000021111 its reverse (111120000122111), we get a palindrome (222341000143222).

The spelling of 111221000021111 in words is "one hundred eleven trillion, two hundred twenty-one billion, twenty-one thousand, one hundred eleven".