21020011200001 has 32 divisors (see below), whose sum is σ = 23382009705600. Its totient is φ = 18735278400000.

The previous prime is 21020011199983. The next prime is 21020011200011. The reversal of 21020011200001 is 10000211002012.

It is a cyclic number.

It is not a de Polignac number, because 21020011200001 - 2²³ = 21020002811393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020011200011) 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, 412123501 + ... + 412174501.

It is an arithmetic number, because the mean of its divisors is an integer number (730687803300).

Almost surely, 2^{21020011200001} is an apocalyptic number.

It is an amenable number.

21020011200001 is a deficient number, since it is larger than the sum of its proper divisors (2361998505599).

21020011200001 is a wasteful number, since it uses less digits than its factorization.

21020011200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53041.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21020011200001 its reverse (10000211002012), we get a palindrome (31020222202013).

The spelling of 21020011200001 in words is "twenty-one trillion, twenty billion, eleven million, two hundred thousand, one".