213148086221 has 4 divisors (see below), whose sum is σ = 243597812832. Its totient is φ = 182698359612.

The previous prime is 213148086209. The next prime is 213148086253. The reversal of 213148086221 is 122680841312.

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 213148086221 - 2⁶ = 213148086157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213148086271) 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, 15224863295 + ... + 15224863308.

It is an arithmetic number, because the mean of its divisors is an integer number (60899453208).

Almost surely, 2^213148086221 is an apocalyptic number.

It is an amenable number.

213148086221 is a deficient number, since it is larger than the sum of its proper divisors (30449726611).

213148086221 is an equidigital number, since it uses as much as digits as its factorization.

213148086221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30449726610.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 213148086221 in words is "two hundred thirteen billion, one hundred forty-eight million, eighty-six thousand, two hundred twenty-one".