212030113111 has 4 divisors (see below), whose sum is σ = 212045570800. Its totient is φ = 212014655424.

The previous prime is 212030113079. The next prime is 212030113147. The reversal of 212030113111 is 111311030212.

It is a happy number.

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 212030113111 - 2⁵ = 212030113079 is a prime.

It is a super-4 number, since 4×212030113111⁴ (a number of 46 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212030113171) 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 3 ways as a sum of consecutive naturals, for example, 7708251 + ... + 7735708.

It is an arithmetic number, because the mean of its divisors is an integer number (53011392700).

Almost surely, 2^212030113111 is an apocalyptic number.

212030113111 is a deficient number, since it is larger than the sum of its proper divisors (15457689).

212030113111 is a wasteful number, since it uses less digits than its factorization.

212030113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15457688.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 212030113111 its reverse (111311030212), we get a palindrome (323341143323).

The spelling of 212030113111 in words is "two hundred twelve billion, thirty million, one hundred thirteen thousand, one hundred eleven".