213102220111 has 4 divisors (see below), whose sum is σ = 232475149224. Its totient is φ = 193729291000.

The previous prime is 213102220109. The next prime is 213102220127. The reversal of 213102220111 is 111022201312.

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 213102220111 - 2¹ = 213102220109 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 (213102220711) 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, 9686464540 + ... + 9686464561.

It is an arithmetic number, because the mean of its divisors is an integer number (58118787306).

Almost surely, 2^213102220111 is an apocalyptic number.

213102220111 is a deficient number, since it is larger than the sum of its proper divisors (19372929113).

213102220111 is a wasteful number, since it uses less digits than its factorization.

213102220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19372929112.

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

Adding to 213102220111 its reverse (111022201312), we get a palindrome (324124421423).

The spelling of 213102220111 in words is "two hundred thirteen billion, one hundred two million, two hundred twenty thousand, one hundred eleven".