201211112201001 has 16 divisors (see below), whose sum is σ = 306607874473344. Its totient is φ = 114977603873664.

The previous prime is 201211112200951. The next prime is 201211112201017. The reversal of 201211112201001 is 100102211112102.

It is a happy number.

It is not a de Polignac number, because 201211112201001 - 2⁷ = 201211112200873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201211112206001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7599445 + ... + 21451661.

It is an arithmetic number, because the mean of its divisors is an integer number (19162992154584).

Almost surely, 2^{201211112201001} is an apocalyptic number.

201211112201001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201211112201001 is a deficient number, since it is larger than the sum of its proper divisors (105396762272343).

201211112201001 is a wasteful number, since it uses less digits than its factorization.

201211112201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14543920.

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

Adding to 201211112201001 its reverse (100102211112102), we get a palindrome (301313323313103).

The spelling of 201211112201001 in words is "two hundred one trillion, two hundred eleven billion, one hundred twelve million, two hundred one thousand, one".