22001069621 has 4 divisors (see below), whose sum is σ = 22001443200. Its totient is φ = 22000696044.

The previous prime is 22001069609. The next prime is 22001069683. The reversal of 22001069621 is 12696010022.

It is a happy number.

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 a de Polignac number, because none of the positive numbers 2^k-22001069621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22001069521) 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, 76901 + ... + 223418.

It is an arithmetic number, because the mean of its divisors is an integer number (5500360800).

Almost surely, 2^22001069621 is an apocalyptic number.

It is an amenable number.

22001069621 is a deficient number, since it is larger than the sum of its proper divisors (373579).

22001069621 is an equidigital number, since it uses as much as digits as its factorization.

22001069621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373578.

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 22001069621 its reverse (12696010022), we get a palindrome (34697079643).

The spelling of 22001069621 in words is "twenty-two billion, one million, sixty-nine thousand, six hundred twenty-one".