20011000212001 has 48 divisors (see below), whose sum is σ = 21532776265728. Its totient is φ = 18576082425600.

The previous prime is 20011000211999. The next prime is 20011000212029. The reversal of 20011000212001 is 10021200011002.

It is not a de Polignac number, because 20011000212001 - 2¹ = 20011000211999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20011000212041) 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 47 ways as a sum of consecutive naturals, for example, 8177767560 + ... + 8177770006.

It is an arithmetic number, because the mean of its divisors is an integer number (448599505536).

Almost surely, 2^{20011000212001} is an apocalyptic number.

It is an amenable number.

20011000212001 is a deficient number, since it is larger than the sum of its proper divisors (1521776053727).

20011000212001 is a wasteful number, since it uses less digits than its factorization.

20011000212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4450 (or 4421 counting only the distinct ones).

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

Adding to 20011000212001 its reverse (10021200011002), we get a palindrome (30032200223003).

The spelling of 20011000212001 in words is "twenty trillion, eleven billion, two hundred twelve thousand, one".