111120021210221 has 8 divisors (see below), whose sum is σ = 116977292152800. Its totient is φ = 105263635145040.

The previous prime is 111120021210199. The next prime is 111120021210377. The reversal of 111120021210221 is 122012120021111.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111120021210221 is a prime.

It is a super-2 number, since 2×111120021210221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111120021210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111120021270221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220961570 + ... + 221463891.

It is an arithmetic number, because the mean of its divisors is an integer number (14622161519100).

Almost surely, 2^{111120021210221} is an apocalyptic number.

It is an amenable number.

111120021210221 is a deficient number, since it is larger than the sum of its proper divisors (5857270942579).

111120021210221 is a wasteful number, since it uses less digits than its factorization.

111120021210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442438699.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 111120021210221 its reverse (122012120021111), we get a palindrome (233132141231332).

The spelling of 111120021210221 in words is "one hundred eleven trillion, one hundred twenty billion, twenty-one million, two hundred ten thousand, two hundred twenty-one".