212122019 has 2 divisors, whose sum is σ = 212122020. Its totient is φ = 212122018.

The previous prime is 212122007. The next prime is 212122049. The reversal of 212122019 is 910221212.

It is a happy number.

212122019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212122019 - 2¹⁶ = 212056483 is a prime.

It is a super-2 number, since 2×212122019² = 89991501889272722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212122049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106061009 + 106061010.

It is an arithmetic number, because the mean of its divisors is an integer number (106061010).

Almost surely, 2^212122019 is an apocalyptic number.

212122019 is a deficient number, since it is larger than the sum of its proper divisors (1).

212122019 is an equidigital number, since it uses as much as digits as its factorization.

212122019 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 20.

The square root of 212122019 is about 14564.4093254756. The cubic root of 212122019 is about 596.3875710965.

The spelling of 212122019 in words is "two hundred twelve million, one hundred twenty-two thousand, nineteen".