20212000111001 has 4 divisors (see below), whose sum is σ = 20908965632100. Its totient is φ = 19515034589904.

The previous prime is 20212000110961. The next prime is 20212000111049. The reversal of 20212000111001 is 10011100021202.

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 4447733371225 + 15764266739776 = 2108965^2 + 3970424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212000111001 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20212000116001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348482760506 + ... + 348482760563.

It is an arithmetic number, because the mean of its divisors is an integer number (5227241408025).

Almost surely, 2^{20212000111001} is an apocalyptic number.

It is an amenable number.

20212000111001 is a deficient number, since it is larger than the sum of its proper divisors (696965521099).

20212000111001 is an equidigital number, since it uses as much as digits as its factorization.

20212000111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696965521098.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20212000111001 its reverse (10011100021202), we get a palindrome (30223100132203).

The spelling of 20212000111001 in words is "twenty trillion, two hundred twelve billion, one hundred eleven thousand, one".