11221010021021 has 4 divisors (see below), whose sum is σ = 11250616908000. Its totient is φ = 11191403134044.

The previous prime is 11221010020951. The next prime is 11221010021041. The reversal of 11221010021021 is 12012001012211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11221010021021 - 2³⁸ = 10946132114077 is a prime.

It is a super-2 number, since 2×11221010021021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11221010020987 and 11221010021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221010021041) 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, 14803442921 + ... + 14803443678.

It is an arithmetic number, because the mean of its divisors is an integer number (2812654227000).

Almost surely, 2^{11221010021021} is an apocalyptic number.

It is an amenable number.

11221010021021 is a deficient number, since it is larger than the sum of its proper divisors (29606886979).

11221010021021 is an equidigital number, since it uses as much as digits as its factorization.

11221010021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29606886978.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 11221010021021 its reverse (12012001012211), we get a palindrome (23233011033232).

The spelling of 11221010021021 in words is "eleven trillion, two hundred twenty-one billion, ten million, twenty-one thousand, twenty-one".