111100210221 has 48 divisors (see below), whose sum is σ = 202444377408. Its totient is φ = 53274816000.

The previous prime is 111100210159. The next prime is 111100210237. The reversal of 111100210221 is 122012001111.

It is not a de Polignac number, because 111100210221 - 2⁹ = 111100209709 is a prime.

It is a super-2 number, since 2×111100210221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111100210197 and 111100210206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111100210271) 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, 2621580 + ... + 2663621.

It is an arithmetic number, because the mean of its divisors is an integer number (4217591196).

Almost surely, 2^111100210221 is an apocalyptic number.

111100210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111100210221 is a deficient number, since it is larger than the sum of its proper divisors (91344167187).

111100210221 is a wasteful number, since it uses less digits than its factorization.

111100210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5285242 (or 5285235 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111100210221 its reverse (122012001111), we get a palindrome (233112211332).

The spelling of 111100210221 in words is "one hundred eleven billion, one hundred million, two hundred ten thousand, two hundred twenty-one".