213111101 has 8 divisors (see below), whose sum is σ = 243644544. Its totient is φ = 182599920.

The previous prime is 213111061. The next prime is 213111131. The reversal of 213111101 is 101111312.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 213111101 - 2¹⁸ = 212848957 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 (213111131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30896 + ... + 37158.

It is an arithmetic number, because the mean of its divisors is an integer number (30455568).

Almost surely, 2^213111101 is an apocalyptic number.

It is an amenable number.

213111101 is a deficient number, since it is larger than the sum of its proper divisors (30533443).

213111101 is an equidigital number, since it uses as much as digits as its factorization.

213111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11131.

The product of its (nonzero) digits is 6, while the sum is 11.

The square root of 213111101 is about 14598.3252806615. The cubic root of 213111101 is about 597.3130789050.

Adding to 213111101 its reverse (101111312), we get a palindrome (314222413).

The spelling of 213111101 in words is "two hundred thirteen million, one hundred eleven thousand, one hundred one".