221213310011 has 4 divisors (see below), whose sum is σ = 221349947400. Its totient is φ = 221076672624.

The previous prime is 221213309981. The next prime is 221213310013. The reversal of 221213310011 is 110013312122.

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 221213310011 - 2¹⁴ = 221213293627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221213310013) 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, 68316266 + ... + 68319503.

It is an arithmetic number, because the mean of its divisors is an integer number (55337486850).

Almost surely, 2^221213310011 is an apocalyptic number.

221213310011 is a deficient number, since it is larger than the sum of its proper divisors (136637389).

221213310011 is a wasteful number, since it uses less digits than its factorization.

221213310011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136637388.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 221213310011 its reverse (110013312122), we get a palindrome (331226622133).

The spelling of 221213310011 in words is "two hundred twenty-one billion, two hundred thirteen million, three hundred ten thousand, eleven".