22002201021 has 4 divisors (see below), whose sum is σ = 29336268032.
Its totient is φ = 14668134012.
The previous prime is 22002201007. The next prime is 22002201041. The reversal of 22002201021 is 12010220022.
Adding to 22002201021 its reverse (12010220022), we get a palindrome (34012421043).
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 not a de Polignac number, because 22002201021 - 211 = 22002198973 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 22002200988 and 22002201006.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (22002201041) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3667033501 + ... + 3667033506.
It is an arithmetic number, because the mean of its divisors is an integer number (7334067008).
Almost surely, 222002201021 is an apocalyptic number.
It is an amenable number.
22002201021 is a deficient number, since it is larger than the sum of its proper divisors (7334067011).
22002201021 is an equidigital number, since it uses as much as digits as its factorization.
22002201021 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7334067010.
The product of its (nonzero) digits is 32, while the sum is 12.
The spelling of 22002201021 in words is "twenty-two billion, two million, two hundred one thousand, twenty-one".