20120021112001 has 16 divisors (see below), whose sum is σ = 21402794750400. Its totient is φ = 18860204740608.

The previous prime is 20120021111951. The next prime is 20120021112041. The reversal of 20120021112001 is 10021112002102.

It is a cyclic number.

It is not a de Polignac number, because 20120021112001 - 2¹⁹ = 20120020587713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120021112041) 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 15 ways as a sum of consecutive naturals, for example, 6722016 + ... + 9242593.

It is an arithmetic number, because the mean of its divisors is an integer number (1337674671900).

Almost surely, 2^{20120021112001} is an apocalyptic number.

It is an amenable number.

20120021112001 is a deficient number, since it is larger than the sum of its proper divisors (1282773638399).

20120021112001 is a wasteful number, since it uses less digits than its factorization.

20120021112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15965328.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20120021112001 its reverse (10021112002102), we get a palindrome (30141133114103).

The spelling of 20120021112001 in words is "twenty trillion, one hundred twenty billion, twenty-one million, one hundred twelve thousand, one".