201200111111001 has 16 divisors (see below), whose sum is σ = 279034480631808. Its totient is φ = 128815633798800.

The previous prime is 201200111110993. The next prime is 201200111111003. The reversal of 201200111111001 is 100111111002102.

It is not a de Polignac number, because 201200111111001 - 2³ = 201200111110993 is a prime.

It is a super-2 number, since 2×201200111111001² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201200111111003) 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, 8257400241 + ... + 8257424606.

It is an arithmetic number, because the mean of its divisors is an integer number (17439655039488).

Almost surely, 2^{201200111111001} is an apocalyptic number.

It is an amenable number.

201200111111001 is a deficient number, since it is larger than the sum of its proper divisors (77834369520807).

201200111111001 is a wasteful number, since it uses less digits than its factorization.

201200111111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16514825012.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 201200111111001 its reverse (100111111002102), we get a palindrome (301311222113103).

The spelling of 201200111111001 in words is "two hundred one trillion, two hundred billion, one hundred eleven million, one hundred eleven thousand, one".