213102021211 has 8 divisors (see below), whose sum is σ = 220668018480. Its totient is φ = 205550534112.

The previous prime is 213102021191. The next prime is 213102021241. The reversal of 213102021211 is 112120201312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213102021211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213102021241) 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 7 ways as a sum of consecutive naturals, for example, 3597645 + ... + 3656398.

It is an arithmetic number, because the mean of its divisors is an integer number (27583502310).

Almost surely, 2^213102021211 is an apocalyptic number.

213102021211 is a deficient number, since it is larger than the sum of its proper divisors (7565997269).

213102021211 is a wasteful number, since it uses less digits than its factorization.

213102021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7255085.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 213102021211 its reverse (112120201312), we get a palindrome (325222222523).

The spelling of 213102021211 in words is "two hundred thirteen billion, one hundred two million, twenty-one thousand, two hundred eleven".