11001201212001 has 72 divisors (see below), whose sum is σ = 20198010024192. Its totient is φ = 5275301169600.

The previous prime is 11001201211937. The next prime is 11001201212039. The reversal of 11001201212001 is 10021210210011.

It is not a de Polignac number, because 11001201212001 - 2⁶ = 11001201211937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11001201212051) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 23557105 + ... + 24019566.

Almost surely, 2^{11001201212001} is an apocalyptic number.

11001201212001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11001201212001 is a deficient number, since it is larger than the sum of its proper divisors (9196808812191).

11001201212001 is a wasteful number, since it uses less digits than its factorization.

11001201212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47576723 (or 47576705 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11001201212001 its reverse (10021210210011), we get a palindrome (21022411422012).

The spelling of 11001201212001 in words is "eleven trillion, one billion, two hundred one million, two hundred twelve thousand, one".