212120111219 has 2 divisors, whose sum is σ = 212120111220. Its totient is φ = 212120111218.

The previous prime is 212120111171. The next prime is 212120111233. The reversal of 212120111219 is 912111021212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212120111219 is a prime.

It is a super-2 number, since 2×212120111219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212120111194 and 212120111203.

It is not a weakly prime, because it can be changed into another prime (212120110219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106060055609 + 106060055610.

It is an arithmetic number, because the mean of its divisors is an integer number (106060055610).

Almost surely, 2^212120111219 is an apocalyptic number.

212120111219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212120111219 is an equidigital number, since it uses as much as digits as its factorization.

212120111219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 212120111219 in words is "two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, two hundred nineteen".