213120011 has 4 divisors (see below), whose sum is σ = 229513872. Its totient is φ = 196726152.

The previous prime is 213119993. The next prime is 213120029. The reversal of 213120011 is 110021312.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213119993) and next prime (213120029).

It is a cyclic number.

It is not a de Polignac number, because 213120011 - 2²² = 208925707 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213119974 and 213120001.

It is not an unprimeable number, because it can be changed into a prime (213120811) 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, 8196911 + ... + 8196936.

It is an arithmetic number, because the mean of its divisors is an integer number (57378468).

Almost surely, 2^213120011 is an apocalyptic number.

213120011 is a deficient number, since it is larger than the sum of its proper divisors (16393861).

213120011 is a wasteful number, since it uses less digits than its factorization.

213120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16393860.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 213120011 is about 14598.6304494634. The cubic root of 213120011 is about 597.3214031786.

Adding to 213120011 its reverse (110021312), we get a palindrome (323141323).

The spelling of 213120011 in words is "two hundred thirteen million, one hundred twenty thousand, eleven".