222222001021101 has 16 divisors (see below), whose sum is σ = 329224029481920. Its totient is φ = 148145188094640.

The previous prime is 222222001021091. The next prime is 222222001021103. The reversal of 222222001021101 is 101120100222222.

It is a happy number.

222222001021101 is a `hidden beast` number, since 2 + 222 + 220 + 0 + 10 + 211 + 0 + 1 = 666.

It is not a de Polignac number, because 222222001021101 - 2¹⁸ = 222222000758957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222001021103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76678390 + ... + 79523703.

It is an arithmetic number, because the mean of its divisors is an integer number (20576501842620).

Almost surely, 2^{222222001021101} is an apocalyptic number.

It is an amenable number.

222222001021101 is a deficient number, since it is larger than the sum of its proper divisors (107002028460819).

222222001021101 is a wasteful number, since it uses less digits than its factorization.

222222001021101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156254793 (or 156254787 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222222001021101 its reverse (101120100222222), we get a palindrome (323342101243323).

The spelling of 222222001021101 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, one million, twenty-one thousand, one hundred one".