11011202002021 has 4 divisors (see below), whose sum is σ = 11858217540652. Its totient is φ = 10164186463392.

The previous prime is 11011202002007. The next prime is 11011202002079. The reversal of 11011202002021 is 12020020211011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1567719351396 + 9443482650625 = 1252086^2 + 3073025^2 .

It is not a de Polignac number, because 11011202002021 - 2¹⁵ = 11011201969253 is a prime.

It is a super-2 number, since 2×11011202002021² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 847015538617 = 11011202002021 / (1 + 1 + 0 + 1 + 1 + 2 + 0 + 2 + 0 + 0 + 2 + 0 + 2 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011202001992 and 11011202002010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011202009021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423507769296 + ... + 423507769321.

It is an arithmetic number, because the mean of its divisors is an integer number (2964554385163).

Almost surely, 2^{11011202002021} is an apocalyptic number.

It is an amenable number.

11011202002021 is a deficient number, since it is larger than the sum of its proper divisors (847015538631).

11011202002021 is an equidigital number, since it uses as much as digits as its factorization.

11011202002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847015538630.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 11011202002021 its reverse (12020020211011), we get a palindrome (23031222213032).

The spelling of 11011202002021 in words is "eleven trillion, eleven billion, two hundred two million, two thousand, twenty-one".