213101233013021 has 4 divisors (see below), whose sum is σ = 213101286216000. Its totient is φ = 213101179810044.

The previous prime is 213101233012979. The next prime is 213101233013029. The reversal of 213101233013021 is 120310332101312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213101233013021 - 2³⁴ = 213084053143837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213101233013029) 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, 20056571 + ... + 28783128.

It is an arithmetic number, because the mean of its divisors is an integer number (53275321554000).

Almost surely, 2^{213101233013021} is an apocalyptic number.

It is an amenable number.

213101233013021 is a deficient number, since it is larger than the sum of its proper divisors (53202979).

213101233013021 is an equidigital number, since it uses as much as digits as its factorization.

213101233013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53202978.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 213101233013021 its reverse (120310332101312), we get a palindrome (333411565114333).

The spelling of 213101233013021 in words is "two hundred thirteen trillion, one hundred one billion, two hundred thirty-three million, thirteen thousand, twenty-one".