20012222211001 has 8 divisors (see below), whose sum is σ = 20088518607720. Its totient is φ = 19936067762688.

The previous prime is 20012222210887. The next prime is 20012222211017. The reversal of 20012222211001 is 10011222221002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7325553643776 + 12686668567225 = 2706576^2 + 3561835^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012222211001 - 2¹⁷ = 20012222079929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012222211031) 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, 35204596 + ... + 35768533.

It is an arithmetic number, because the mean of its divisors is an integer number (2511064825965).

Almost surely, 2^{20012222211001} is an apocalyptic number.

It is an amenable number.

20012222211001 is a deficient number, since it is larger than the sum of its proper divisors (76296396719).

20012222211001 is an equidigital number, since it uses as much as digits as its factorization.

20012222211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70974203.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20012222211001 its reverse (10011222221002), we get a palindrome (30023444432003).

The spelling of 20012222211001 in words is "twenty trillion, twelve billion, two hundred twenty-two million, two hundred eleven thousand, one".