22111000021021 has 8 divisors (see below), whose sum is σ = 22121172238464. Its totient is φ = 22100828331120.

The previous prime is 22111000021007. The next prime is 22111000021087. The reversal of 22111000021021 is 12012000011122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111000021021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22111000020992 and 22111000021010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22111000021421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101568336 + ... + 101785798.

It is an arithmetic number, because the mean of its divisors is an integer number (2765146529808).

Almost surely, 2^{22111000021021} is an apocalyptic number.

It is an amenable number.

22111000021021 is a deficient number, since it is larger than the sum of its proper divisors (10172217443).

22111000021021 is a wasteful number, since it uses less digits than its factorization.

22111000021021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263771.

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

Adding to 22111000021021 its reverse (12012000011122), we get a palindrome (34123000032143).

The spelling of 22111000021021 in words is "twenty-two trillion, one hundred eleven billion, twenty-one thousand, twenty-one".