20000001212001 has 12 divisors (see below), whose sum is σ = 30144929363328. Its totient is φ = 12753623961144.

The previous prime is 20000001211991. The next prime is 20000001212071. The reversal of 20000001212001 is 10021210000002.

It is not a de Polignac number, because 20000001212001 - 2⁷ = 20000001211873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (20000001212071) 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, 48309181465 + ... + 48309181878.

It is an arithmetic number, because the mean of its divisors is an integer number (2512077446944).

Almost surely, 2^{20000001212001} is an apocalyptic number.

It is an amenable number.

20000001212001 is a deficient number, since it is larger than the sum of its proper divisors (10144928151327).

20000001212001 is a wasteful number, since it uses less digits than its factorization.

20000001212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96618363372 (or 96618363369 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20000001212001 its reverse (10021210000002), we get a palindrome (30021211212003).

The spelling of 20000001212001 in words is "twenty trillion, one million, two hundred twelve thousand, one".