212000021567 has 2 divisors, whose sum is σ = 212000021568. Its totient is φ = 212000021566.

The previous prime is 212000021539. The next prime is 212000021593. The reversal of 212000021567 is 765120000212.

It is an a-pointer prime, because the next prime (212000021593) can be obtained adding 212000021567 to its sum of digits (26).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212000021567 - 2⁶ = 212000021503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212000011567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106000010783 + 106000010784.

It is an arithmetic number, because the mean of its divisors is an integer number (106000010784).

Almost surely, 2^212000021567 is an apocalyptic number.

212000021567 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000021567 is an equidigital number, since it uses as much as digits as its factorization.

212000021567 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 26.

Adding to 212000021567 its reverse (765120000212), we get a palindrome (977120021779).

The spelling of 212000021567 in words is "two hundred twelve billion, twenty-one thousand, five hundred sixty-seven".