22020012001 has 12 divisors (see below), whose sum is σ = 24089988972. Its totient is φ = 20116601856.

The previous prime is 22020011963. The next prime is 22020012013. The reversal of 22020012001 is 10021002022.

It can be written as a sum of positive squares in 6 ways, for example, as 5948111376 + 16071900625 = 77124^2 + 126775^2 .

It is not a de Polignac number, because 22020012001 - 2⁷ = 22020011873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22020012041) 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 11 ways as a sum of consecutive naturals, for example, 655236 + ... + 688021.

It is an arithmetic number, because the mean of its divisors is an integer number (2007499081).

Almost surely, 2^22020012001 is an apocalyptic number.

It is an amenable number.

22020012001 is a deficient number, since it is larger than the sum of its proper divisors (2069976971).

22020012001 is a wasteful number, since it uses less digits than its factorization.

22020012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1343380 (or 1343367 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22020012001 its reverse (10021002022), we get a palindrome (32041014023).

The spelling of 22020012001 in words is "twenty-two billion, twenty million, twelve thousand, one".