11001201021021 has 16 divisors (see below), whose sum is σ = 15154921134080. Its totient is φ = 7091228810160.

The previous prime is 11001201021011. The next prime is 11001201021029. The reversal of 11001201021021 is 12012010210011.

It is not a de Polignac number, because 11001201021021 - 2⁵ = 11001201020989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11001201020988 and 11001201021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11001201021029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52563631 + ... + 52772508.

It is an arithmetic number, because the mean of its divisors is an integer number (947182570880).

Almost surely, 2^{11001201021021} is an apocalyptic number.

It is an amenable number.

11001201021021 is a deficient number, since it is larger than the sum of its proper divisors (4153720113059).

11001201021021 is a wasteful number, since it uses less digits than its factorization.

11001201021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105337296.

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

Adding to 11001201021021 its reverse (12012010210011), we get a palindrome (23013211231032).

The spelling of 11001201021021 in words is "eleven trillion, one billion, two hundred one million, twenty-one thousand, twenty-one".