20201000212001 has 12 divisors (see below), whose sum is σ = 23499235579248. Its totient is φ = 17315059861512.

The previous prime is 20201000211991. The next prime is 20201000212007. The reversal of 20201000212001 is 10021200010202.

It is a happy number.

It is not a de Polignac number, because 20201000212001 - 2³⁸ = 19926122305057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20201000212007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10710950 + ... + 12454976.

It is an arithmetic number, because the mean of its divisors is an integer number (1958269631604).

Almost surely, 2^{20201000212001} is an apocalyptic number.

It is an amenable number.

20201000212001 is a deficient number, since it is larger than the sum of its proper divisors (3298235367247).

20201000212001 is a wasteful number, since it uses less digits than its factorization.

20201000212001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1980428 (or 1980421 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20201000212001 its reverse (10021200010202), we get a palindrome (30222200222203).

The spelling of 20201000212001 in words is "twenty trillion, two hundred one billion, two hundred twelve thousand, one".