222201210111111 has 96 divisors (see below), whose sum is σ = 408690967246848. Its totient is φ = 112967045176320.

The previous prime is 222201210111079. The next prime is 222201210111131. The reversal of 222201210111111 is 111111012102222.

It is a happy number.

222201210111111 is a `hidden beast` number, since 222 + 201 + 21 + 0 + 111 + 111 = 666.

It is not a de Polignac number, because 222201210111111 - 2⁵ = 222201210111079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222201210111131) 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, 623784591 + ... + 624140703.

It is an arithmetic number, because the mean of its divisors is an integer number (4257197575488).

Almost surely, 2^{222201210111111} is an apocalyptic number.

222201210111111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

222201210111111 is a deficient number, since it is larger than the sum of its proper divisors (186489757135737).

222201210111111 is a wasteful number, since it uses less digits than its factorization.

222201210111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375341 (or 375338 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 222201210111111 its reverse (111111012102222), we get a palindrome (333312222213333).

The spelling of 222201210111111 in words is "two hundred twenty-two trillion, two hundred one billion, two hundred ten million, one hundred eleven thousand, one hundred eleven".