212010021247 has 2 divisors, whose sum is σ = 212010021248. Its totient is φ = 212010021246.

The previous prime is 212010021239. The next prime is 212010021283. The reversal of 212010021247 is 742120010212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212010021247 - 2³ = 212010021239 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212010021217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106005010623 + 106005010624.

It is an arithmetic number, because the mean of its divisors is an integer number (106005010624).

Almost surely, 2^212010021247 is an apocalyptic number.

212010021247 is a deficient number, since it is larger than the sum of its proper divisors (1).

212010021247 is an equidigital number, since it uses as much as digits as its factorization.

212010021247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 22.

Adding to 212010021247 its reverse (742120010212), we get a palindrome (954130031459).

The spelling of 212010021247 in words is "two hundred twelve billion, ten million, twenty-one thousand, two hundred forty-seven".