111010012222221 has 96 divisors (see below), whose sum is σ = 188571367083008. Its totient is φ = 61624719129600.

The previous prime is 111010012222127. The next prime is 111010012222253. The reversal of 111010012222221 is 122222210010111.

111010012222221 is a `hidden beast` number, since 1 + 110 + 100 + 12 + 222 + 221 = 666.

It is not a de Polignac number, because 111010012222221 - 2¹⁹ = 111010011697933 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 111010012222194 and 111010012222203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010012226221) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 115391646 + ... + 116349696.

Almost surely, 2^{111010012222221} is an apocalyptic number.

It is an amenable number.

111010012222221 is a deficient number, since it is larger than the sum of its proper divisors (77561354860787).

111010012222221 is a wasteful number, since it uses less digits than its factorization.

111010012222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 958511 (or 958508 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 111010012222221 its reverse (122222210010111), we get a palindrome (233232222232332).

The spelling of 111010012222221 in words is "one hundred eleven trillion, ten billion, twelve million, two hundred twenty-two thousand, two hundred twenty-one".