10212121019 has 2 divisors, whose sum is σ = 10212121020. Its totient is φ = 10212121018.

The previous prime is 10212121013. The next prime is 10212121021. The reversal of 10212121019 is 91012121201.

10212121019 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10212121019 - 2¹² = 10212116923 is a prime.

It is a super-2 number, since 2×10212121019² (a number of 21 digits) contains 22 as substring.

Together with 10212121021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (10212121013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106060509 + 5106060510.

It is an arithmetic number, because the mean of its divisors is an integer number (5106060510).

Almost surely, 2^10212121019 is an apocalyptic number.

10212121019 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212121019 is an equidigital number, since it uses as much as digits as its factorization.

10212121019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 10212121019 in words is "ten billion, two hundred twelve million, one hundred twenty-one thousand, nineteen".