21214036462573 has 2 divisors, whose sum is σ = 21214036462574. Its totient is φ = 21214036462572.

The previous prime is 21214036462571. The next prime is 21214036462613. The reversal of 21214036462573 is 37526463041212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12797411558409 + 8416624904164 = 3577347^2 + 2901142^2 .

It is a cyclic number.

It is not a de Polignac number, because 21214036462573 - 2¹ = 21214036462571 is a prime.

Together with 21214036462571, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21214036462571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10607018231286 + 10607018231287.

It is an arithmetic number, because the mean of its divisors is an integer number (10607018231287).

Almost surely, 2^{21214036462573} is an apocalyptic number.

It is an amenable number.

21214036462573 is a deficient number, since it is larger than the sum of its proper divisors (1).

21214036462573 is an equidigital number, since it uses as much as digits as its factorization.

21214036462573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 46.

The spelling of 21214036462573 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, four hundred sixty-two thousand, five hundred seventy-three".