111010122202221 has 48 divisors (see below), whose sum is σ = 180320600528640. Its totient is φ = 65217166104960.

The previous prime is 111010122202211. The next prime is 111010122202241. The reversal of 111010122202221 is 122202221010111.

111010122202221 is a `hidden beast` number, since 1 + 110 + 10 + 122 + 202 + 221 = 666.

It is not a de Polignac number, because 111010122202221 - 2²¹ = 111010120105069 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111010122202194 and 111010122202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010122202211) 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, 55345125 + ... + 57315818.

It is an arithmetic number, because the mean of its divisors is an integer number (3756679177680).

Almost surely, 2^{111010122202221} is an apocalyptic number.

111010122202221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111010122202221 is a deficient number, since it is larger than the sum of its proper divisors (69310478326419).

111010122202221 is a wasteful number, since it uses less digits than its factorization.

111010122202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112661266 (or 112661263 counting only the distinct ones).

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

Adding to 111010122202221 its reverse (122202221010111), we get a palindrome (233212343212332).

The spelling of 111010122202221 in words is "one hundred eleven trillion, ten billion, one hundred twenty-two million, two hundred two thousand, two hundred twenty-one".