212040111 has 8 divisors (see below), whose sum is σ = 283630464. Its totient is φ = 140904920.

The previous prime is 212040109. The next prime is 212040113. The reversal of 212040111 is 111040212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212040109) and next prime (212040113).

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 212040111 - 2¹ = 212040109 is a prime.

It is a super-2 number, since 2×212040111² = 89922017345784642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212040113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112701 + ... + 114566.

It is an arithmetic number, because the mean of its divisors is an integer number (35453808).

Almost surely, 2^212040111 is an apocalyptic number.

212040111 is a deficient number, since it is larger than the sum of its proper divisors (71590353).

212040111 is a wasteful number, since it uses less digits than its factorization.

212040111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227581.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 212040111 is about 14561.5971308095. The cubic root of 212040111 is about 596.3107989283.

Adding to 212040111 its reverse (111040212), we get a palindrome (323080323).

The spelling of 212040111 in words is "two hundred twelve million, forty thousand, one hundred eleven".