20201211312001 has 16 divisors (see below), whose sum is σ = 20928831827904. Its totient is φ = 19486181320704.

The previous prime is 20201211311929. The next prime is 20201211312013. The reversal of 20201211312001 is 10021311210202.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20201211312001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201211312091) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3237640 + ... + 7133353.

It is an arithmetic number, because the mean of its divisors is an integer number (1308051989244).

Almost surely, 2^{20201211312001} is an apocalyptic number.

It is an amenable number.

20201211312001 is a deficient number, since it is larger than the sum of its proper divisors (727620515903).

20201211312001 is a wasteful number, since it uses less digits than its factorization.

20201211312001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10371600.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 20201211312001 its reverse (10021311210202), we get a palindrome (30222522522203).

The spelling of 20201211312001 in words is "twenty trillion, two hundred one billion, two hundred eleven million, three hundred twelve thousand, one".