20212111012001 has 4 divisors (see below), whose sum is σ = 20212232878404. Its totient is φ = 20211989145600.

The previous prime is 20212111011949. The next prime is 20212111012007. The reversal of 20212111012001 is 10021011121202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8697049253776 + 11515061758225 = 2949076^2 + 3393385^2 .

It is a cyclic number.

It is not a de Polignac number, because 20212111012001 - 2¹⁰ = 20212111010977 is a prime.

It is a super-2 number, since 2×20212111012001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20212111012007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60684080 + ... + 61016241.

It is an arithmetic number, because the mean of its divisors is an integer number (5053058219601).

Almost surely, 2^{20212111012001} is an apocalyptic number.

It is an amenable number.

20212111012001 is a deficient number, since it is larger than the sum of its proper divisors (121866403).

20212111012001 is a wasteful number, since it uses less digits than its factorization.

20212111012001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121866402.

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

Adding to 20212111012001 its reverse (10021011121202), we get a palindrome (30233122133203).

The spelling of 20212111012001 in words is "twenty trillion, two hundred twelve billion, one hundred eleven million, twelve thousand, one".