20012202112001 has 4 divisors (see below), whose sum is σ = 21831493213104. Its totient is φ = 18192911010900.

The previous prime is 20012202111991. The next prime is 20012202112033. The reversal of 20012202112001 is 10021120221002.

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 a de Polignac number, because none of the positive numbers 2^k-20012202112001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012202112051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909645550535 + ... + 909645550556.

It is an arithmetic number, because the mean of its divisors is an integer number (5457873303276).

Almost surely, 2^{20012202112001} is an apocalyptic number.

It is an amenable number.

20012202112001 is a deficient number, since it is larger than the sum of its proper divisors (1819291101103).

20012202112001 is a wasteful number, since it uses less digits than its factorization.

20012202112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819291101102.

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

Adding to 20012202112001 its reverse (10021120221002), we get a palindrome (30033322333003).

The spelling of 20012202112001 in words is "twenty trillion, twelve billion, two hundred two million, one hundred twelve thousand, one".