20120012221001 has 32 divisors (see below), whose sum is σ = 25280065916928. Its totient is φ = 15555933210240.

The previous prime is 20120012220967. The next prime is 20120012221009. The reversal of 20120012221001 is 10012221002102.

It is a cyclic number.

It is not a de Polignac number, because 20120012221001 - 2¹⁸ = 20120011958857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20120012221009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21300326 + ... + 22224848.

It is an arithmetic number, because the mean of its divisors is an integer number (790002059904).

Almost surely, 2^{20120012221001} is an apocalyptic number.

It is an amenable number.

20120012221001 is a deficient number, since it is larger than the sum of its proper divisors (5160053695927).

20120012221001 is a wasteful number, since it uses less digits than its factorization.

20120012221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926741.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20120012221001 its reverse (10012221002102), we get a palindrome (30132233223103).

The spelling of 20120012221001 in words is "twenty trillion, one hundred twenty billion, twelve million, two hundred twenty-one thousand, one".