111002212221 has 8 divisors (see below), whose sum is σ = 148910943840. Its totient is φ = 73547477712.

The previous prime is 111002212183. The next prime is 111002212229. The reversal of 111002212221 is 122212200111.

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

It is not a de Polignac number, because 111002212221 - 2²⁷ = 110867994493 is a prime.

It is a super-2 number, since 2×111002212221² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111002212221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111002212229) 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, 113498706 + ... + 113499683.

It is an arithmetic number, because the mean of its divisors is an integer number (18613867980).

Almost surely, 2^111002212221 is an apocalyptic number.

It is an amenable number.

111002212221 is a deficient number, since it is larger than the sum of its proper divisors (37908731619).

111002212221 is a wasteful number, since it uses less digits than its factorization.

111002212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226998555.

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

Adding to 111002212221 its reverse (122212200111), we get a palindrome (233214412332).

The spelling of 111002212221 in words is "one hundred eleven billion, two million, two hundred twelve thousand, two hundred twenty-one".