11111222001201 has 16 divisors (see below), whose sum is σ = 16936295088000. Its totient is φ = 6347428771968.

The previous prime is 11111222001199. The next prime is 11111222001223. The reversal of 11111222001201 is 10210022211111.

It is a happy number.

It is not a de Polignac number, because 11111222001201 - 2¹ = 11111222001199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111222006201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76631806 + ... + 76776663.

It is an arithmetic number, because the mean of its divisors is an integer number (1058518443000).

Almost surely, 2^{11111222001201} is an apocalyptic number.

It is an amenable number.

11111222001201 is a deficient number, since it is larger than the sum of its proper divisors (5825073086799).

11111222001201 is a wasteful number, since it uses less digits than its factorization.

11111222001201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153411928.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11111222001201 its reverse (10210022211111), we get a palindrome (21321244212312).

The spelling of 11111222001201 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, one thousand, two hundred one".