212111021219 has 2 divisors, whose sum is σ = 212111021220. Its totient is φ = 212111021218.

The previous prime is 212111021203. The next prime is 212111021261. The reversal of 212111021219 is 912120111212.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212111021219 - 2⁴ = 212111021203 is a prime.

It is a super-2 number, since 2×212111021219² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212111021194 and 212111021203.

It is not a weakly prime, because it can be changed into another prime (212111021299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106055510609 + 106055510610.

It is an arithmetic number, because the mean of its divisors is an integer number (106055510610).

Almost surely, 2^212111021219 is an apocalyptic number.

212111021219 is a deficient number, since it is larger than the sum of its proper divisors (1).

212111021219 is an equidigital number, since it uses as much as digits as its factorization.

212111021219 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 212111021219 in words is "two hundred twelve billion, one hundred eleven million, twenty-one thousand, two hundred nineteen".