11011021100001 has 48 divisors (see below), whose sum is σ = 17158330949760. Its totient is φ = 6764125294080.

The previous prime is 11011021099999. The next prime is 11011021100017. The reversal of 11011021100001 is 10000112011011.

It is not a de Polignac number, because 11011021100001 - 2¹ = 11011021099999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11011021100081) 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, 156418030 + ... + 156488408.

It is an arithmetic number, because the mean of its divisors is an integer number (357465228120).

Almost surely, 2^{11011021100001} is an apocalyptic number.

It is an amenable number.

11011021100001 is a deficient number, since it is larger than the sum of its proper divisors (6147309849759).

11011021100001 is a wasteful number, since it uses less digits than its factorization.

11011021100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72726 (or 72723 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 11011021100001 its reverse (10000112011011), we get a palindrome (21011133111012).

The spelling of 11011021100001 in words is "eleven trillion, eleven billion, twenty-one million, one hundred thousand, one".