201011222122111 has 4 divisors (see below), whose sum is σ = 207495455093824. Its totient is φ = 194526989150400.

The previous prime is 201011222122091. The next prime is 201011222122163. The reversal of 201011222122111 is 111221222110102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 201011222122111 - 2¹⁵ = 201011222089343 is a prime.

It is a super-2 number, since 2×201011222122111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011222122211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3242116485810 + ... + 3242116485871.

It is an arithmetic number, because the mean of its divisors is an integer number (51873863773456).

Almost surely, 2^{201011222122111} is an apocalyptic number.

201011222122111 is a deficient number, since it is larger than the sum of its proper divisors (6484232971713).

201011222122111 is an equidigital number, since it uses as much as digits as its factorization.

201011222122111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6484232971712.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201011222122111 its reverse (111221222110102), we get a palindrome (312232444232213).

The spelling of 201011222122111 in words is "two hundred one trillion, eleven billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred eleven".