210021111112019 has 2 divisors, whose sum is σ = 210021111112020. Its totient is φ = 210021111112018.

The previous prime is 210021111111997. The next prime is 210021111112049. The reversal of 210021111112019 is 910211111120012.

210021111112019 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 210021111112019 - 2¹² = 210021111107923 is a prime.

It is a super-2 number, since 2×210021111112019² (a number of 29 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 210021111111985 and 210021111112003.

It is not a weakly prime, because it can be changed into another prime (210021111112049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010555556009 + 105010555556010.

It is an arithmetic number, because the mean of its divisors is an integer number (105010555556010).

Almost surely, 2^{210021111112019} is an apocalyptic number.

210021111112019 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021111112019 is an equidigital number, since it uses as much as digits as its factorization.

210021111112019 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 23.

The spelling of 210021111112019 in words is "two hundred ten trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, nineteen".