111111210122001 has 8 divisors (see below), whose sum is σ = 152152287734784. Its totient is φ = 72072136295280.

The previous prime is 111111210121999. The next prime is 111111210122051. The reversal of 111111210122001 is 100221012111111.

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

It is not a de Polignac number, because 111111210122001 - 2¹ = 111111210121999 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (111111210122051) 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, 500500946385 + ... + 500500946606.

It is an arithmetic number, because the mean of its divisors is an integer number (19019035966848).

Almost surely, 2^{111111210122001} is an apocalyptic number.

It is an amenable number.

111111210122001 is a deficient number, since it is larger than the sum of its proper divisors (41041077612783).

111111210122001 is a wasteful number, since it uses less digits than its factorization.

111111210122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1001001893031.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111111210122001 its reverse (100221012111111), we get a palindrome (211332222233112).

The spelling of 111111210122001 in words is "one hundred eleven trillion, one hundred eleven billion, two hundred ten million, one hundred twenty-two thousand, one".