111010222011221 has 8 divisors (see below), whose sum is σ = 119599054906464. Its totient is φ = 102428472694320.

The previous prime is 111010222011217. The next prime is 111010222011289. The reversal of 111010222011221 is 122110222010111.

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 111010222011221 - 2² = 111010222011217 is a prime.

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 111010222011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010222013221) 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, 1770862031 + ... + 1770924716.

It is an arithmetic number, because the mean of its divisors is an integer number (14949881863308).

Almost surely, 2^{111010222011221} is an apocalyptic number.

It is an amenable number.

111010222011221 is a deficient number, since it is larger than the sum of its proper divisors (8588832895243).

111010222011221 is a wasteful number, since it uses less digits than its factorization.

111010222011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541789171.

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

Adding to 111010222011221 its reverse (122110222010111), we get a palindrome (233120444021332).

The spelling of 111010222011221 in words is "one hundred eleven trillion, ten billion, two hundred twenty-two million, eleven thousand, two hundred twenty-one".