20120201112001 has 4 divisors (see below), whose sum is σ = 20120349422512. Its totient is φ = 20120052801492.

The previous prime is 20120201111891. The next prime is 20120201112017. The reversal of 20120201112001 is 10021110202102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20120201112001 - 2⁹ = 20120201111489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120201112041) 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 3 ways as a sum of consecutive naturals, for example, 73951575 + ... + 74223148.

It is an arithmetic number, because the mean of its divisors is an integer number (5030087355628).

Almost surely, 2^{20120201112001} is an apocalyptic number.

It is an amenable number.

20120201112001 is a deficient number, since it is larger than the sum of its proper divisors (148310511).

20120201112001 is a wasteful number, since it uses less digits than its factorization.

20120201112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148310510.

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

Adding to 20120201112001 its reverse (10021110202102), we get a palindrome (30141311314103).

The spelling of 20120201112001 in words is "twenty trillion, one hundred twenty billion, two hundred one million, one hundred twelve thousand, one".