11221010010021 has 32 divisors (see below), whose sum is σ = 17314749785088. Its totient is φ = 6331070090880.

The previous prime is 11221010010019. The next prime is 11221010010029. The reversal of 11221010010021 is 12001001012211.

It is not a de Polignac number, because 11221010010021 - 2¹ = 11221010010019 is a prime.

It is a super-2 number, since 2×11221010010021² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221010009979 and 11221010010006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221010010029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1129350 + ... + 4870056.

It is an arithmetic number, because the mean of its divisors is an integer number (541085930784).

Almost surely, 2^{11221010010021} is an apocalyptic number.

It is an amenable number.

11221010010021 is a deficient number, since it is larger than the sum of its proper divisors (6093739775067).

11221010010021 is a wasteful number, since it uses less digits than its factorization.

11221010010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3742521.

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

Adding to 11221010010021 its reverse (12001001012211), we get a palindrome (23222011022232).

The spelling of 11221010010021 in words is "eleven trillion, two hundred twenty-one billion, ten million, ten thousand, twenty-one".