212021001200011 has 4 divisors (see below), whose sum is σ = 213290588033712. Its totient is φ = 210751414366312.

The previous prime is 212021001200003. The next prime is 212021001200027. The reversal of 212021001200011 is 110002100120212.

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

It is a cyclic number.

It is not a de Polignac number, because 212021001200011 - 2³ = 212021001200003 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021001199964 and 212021001200000.

It is not an unprimeable number, because it can be changed into a prime (212021001200311) 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, 634793416600 + ... + 634793416933.

It is an arithmetic number, because the mean of its divisors is an integer number (53322647008428).

Almost surely, 2^{212021001200011} is an apocalyptic number.

212021001200011 is a deficient number, since it is larger than the sum of its proper divisors (1269586833701).

212021001200011 is a wasteful number, since it uses less digits than its factorization.

212021001200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1269586833700.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212021001200011 its reverse (110002100120212), we get a palindrome (322023101320223).

The spelling of 212021001200011 in words is "two hundred twelve trillion, twenty-one billion, one million, two hundred thousand, eleven".