20211212110001 has 16 divisors (see below), whose sum is σ = 22497986494080. Its totient is φ = 18000366558720.

The previous prime is 20211212109919. The next prime is 20211212110031. The reversal of 20211212110001 is 10001121211202.

It is a cyclic number.

It is not a de Polignac number, because 20211212110001 - 2⁴² = 15813165598897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20211212110031) 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 15 ways as a sum of consecutive naturals, for example, 25363661 + ... + 26148378.

It is an arithmetic number, because the mean of its divisors is an integer number (1406124155880).

Almost surely, 2^{20211212110001} is an apocalyptic number.

It is an amenable number.

20211212110001 is a deficient number, since it is larger than the sum of its proper divisors (2286774384079).

20211212110001 is a wasteful number, since it uses less digits than its factorization.

20211212110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51512776.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20211212110001 its reverse (10001121211202), we get a palindrome (30212333321203).

The spelling of 20211212110001 in words is "twenty trillion, two hundred eleven billion, two hundred twelve million, one hundred ten thousand, one".