111010222221 has 8 divisors (see below), whose sum is σ = 148144735680. Its totient is φ = 73941261792.

The previous prime is 111010222189. The next prime is 111010222319. The reversal of 111010222221 is 122222010111.

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

It is not a de Polignac number, because 111010222221 - 2⁵ = 111010222189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 111010222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010222121) 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, 16384305 + ... + 16391078.

It is an arithmetic number, because the mean of its divisors is an integer number (18518091960).

Almost surely, 2^111010222221 is an apocalyptic number.

It is an amenable number.

111010222221 is a deficient number, since it is larger than the sum of its proper divisors (37134513459).

111010222221 is a wasteful number, since it uses less digits than its factorization.

111010222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32776515.

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

Adding to 111010222221 its reverse (122222010111), we get a palindrome (233232232332).

The spelling of 111010222221 in words is "one hundred eleven billion, ten million, two hundred twenty-two thousand, two hundred twenty-one".