212102240111 has 2 divisors, whose sum is σ = 212102240112. Its totient is φ = 212102240110.

The previous prime is 212102240107. The next prime is 212102240117. The reversal of 212102240111 is 111042201212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212102240111 - 2² = 212102240107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212102240111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212102240117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106051120055 + 106051120056.

It is an arithmetic number, because the mean of its divisors is an integer number (106051120056).

Almost surely, 2^212102240111 is an apocalyptic number.

212102240111 is a deficient number, since it is larger than the sum of its proper divisors (1).

212102240111 is an equidigital number, since it uses as much as digits as its factorization.

212102240111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212102240111 its reverse (111042201212), we get a palindrome (323144441323).

The spelling of 212102240111 in words is "two hundred twelve billion, one hundred two million, two hundred forty thousand, one hundred eleven".