22002211021 has 8 divisors (see below), whose sum is σ = 25619825664. Its totient is φ = 18503206800.

The previous prime is 22002211009. The next prime is 22002211027. The reversal of 22002211021 is 12011220022.

It is a happy number.

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-22002211021 is a prime.

It is a super-2 number, since 2×22002211021² (a number of 21 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 = 22002210992 and 22002211010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002211027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29652205 + ... + 29652946.

It is an arithmetic number, because the mean of its divisors is an integer number (3202478208).

Almost surely, 2^22002211021 is an apocalyptic number.

It is an amenable number.

22002211021 is a deficient number, since it is larger than the sum of its proper divisors (3617614643).

22002211021 is an equidigital number, since it uses as much as digits as its factorization.

22002211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59305211.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22002211021 its reverse (12011220022), we get a palindrome (34013431043).

Subtracting from 22002211021 its reverse (12011220022), we obtain a palindrome (9990990999).

The spelling of 22002211021 in words is "twenty-two billion, two million, two hundred eleven thousand, twenty-one".