22021200007 has 4 divisors (see below), whose sum is σ = 22021594560. Its totient is φ = 22020805456.

The previous prime is 22021199923. The next prime is 22021200011. The reversal of 22021200007 is 70000212022.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22021200007 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 (22021200107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96343 + ... + 230920.

It is an arithmetic number, because the mean of its divisors is an integer number (5505398640).

Almost surely, 2^22021200007 is an apocalyptic number.

22021200007 is a deficient number, since it is larger than the sum of its proper divisors (394553).

22021200007 is an equidigital number, since it uses as much as digits as its factorization.

22021200007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394552.

The product of its (nonzero) digits is 112, while the sum is 16.

Adding to 22021200007 its reverse (70000212022), we get a palindrome (92021412029).

The spelling of 22021200007 in words is "twenty-two billion, twenty-one million, two hundred thousand, seven".