11001201001 has 48 divisors (see below), whose sum is σ = 13932822528. Its totient is φ = 8491586400.

The previous prime is 11001200989. The next prime is 11001201019. The reversal of 11001201001 is 10010210011.

It is not a de Polignac number, because 11001201001 - 2¹³ = 11001192809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11001201091) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11100616 + ... + 11101606.

It is an arithmetic number, because the mean of its divisors is an integer number (290267136).

Almost surely, 2^11001201001 is an apocalyptic number.

It is an amenable number.

11001201001 is a deficient number, since it is larger than the sum of its proper divisors (2931621527).

11001201001 is a wasteful number, since it uses less digits than its factorization.

11001201001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250 (or 1231 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 11001201001 its reverse (10010210011), we get a palindrome (21011411012).

The spelling of 11001201001 in words is "eleven billion, one million, two hundred one thousand, one".