11010001011021 has 16 divisors (see below), whose sum is σ = 16312051425600. Its totient is φ = 7339578206544.

The previous prime is 11010001011017. The next prime is 11010001011073. The reversal of 11010001011021 is 12011010001011.

It is not a de Polignac number, because 11010001011021 - 2² = 11010001011017 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 11010001010994 and 11010001011012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010001011221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11257066 + ... + 12195963.

It is an arithmetic number, because the mean of its divisors is an integer number (1019503214100).

Almost surely, 2^{11010001011021} is an apocalyptic number.

It is an amenable number.

11010001011021 is a deficient number, since it is larger than the sum of its proper divisors (5302050414579).

11010001011021 is a wasteful number, since it uses less digits than its factorization.

11010001011021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23470425 (or 23470419 counting only the distinct ones).

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

Adding to 11010001011021 its reverse (12011010001011), we get a palindrome (23021011012032).

The spelling of 11010001011021 in words is "eleven trillion, ten billion, one million, eleven thousand, twenty-one".