11001001201021 has 8 divisors (see below), whose sum is σ = 11847281191200. Its totient is φ = 10154728229232.

The previous prime is 11001001200979. The next prime is 11001001201049. The reversal of 11001001201021 is 12010210010011.

11001001201021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11001001201021 - 2³⁹ = 10451245387133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11001001200989 and 11001001201007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001001201061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1761930 + ... + 5010628.

It is an arithmetic number, because the mean of its divisors is an integer number (1480910148900).

Almost surely, 2^{11001001201021} is an apocalyptic number.

It is an amenable number.

11001001201021 is a deficient number, since it is larger than the sum of its proper divisors (846279990179).

11001001201021 is a wasteful number, since it uses less digits than its factorization.

11001001201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509195.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 11001001201021 its reverse (12010210010011), we get a palindrome (23011211211032).

The spelling of 11001001201021 in words is "eleven trillion, one billion, one million, two hundred one thousand, twenty-one".