213011002212121 has 8 divisors (see below), whose sum is σ = 213022511511488. Its totient is φ = 212999493294000.

The previous prime is 213011002212017. The next prime is 213011002212163. The reversal of 213011002212121 is 121212200110312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213011002212121 - 2⁷ = 213011002211993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213011002212821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2628718876 + ... + 2628799906.

It is an arithmetic number, because the mean of its divisors is an integer number (26627813938936).

Almost surely, 2^{213011002212121} is an apocalyptic number.

It is an amenable number.

213011002212121 is a deficient number, since it is larger than the sum of its proper divisors (11509299367).

213011002212121 is an equidigital number, since it uses as much as digits as its factorization.

213011002212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190623.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 213011002212121 its reverse (121212200110312), we get a palindrome (334223202322433).

The spelling of 213011002212121 in words is "two hundred thirteen trillion, eleven billion, two million, two hundred twelve thousand, one hundred twenty-one".