21142224404039 has 2 divisors, whose sum is σ = 21142224404040. Its totient is φ = 21142224404038.

The previous prime is 21142224403991. The next prime is 21142224404051. The reversal of 21142224404039 is 93040442224112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21142224404039 - 2¹⁶ = 21142224338503 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21142224403993 and 21142224404011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21142224434039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10571112202019 + 10571112202020.

It is an arithmetic number, because the mean of its divisors is an integer number (10571112202020).

Almost surely, 2^{21142224404039} is an apocalyptic number.

21142224404039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21142224404039 is an equidigital number, since it uses as much as digits as its factorization.

21142224404039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 110592, while the sum is 38.

The spelling of 21142224404039 in words is "twenty-one trillion, one hundred forty-two billion, two hundred twenty-four million, four hundred four thousand, thirty-nine".