21124069039 has 2 divisors, whose sum is σ = 21124069040. Its totient is φ = 21124069038.

The previous prime is 21124069027. The next prime is 21124069051. The reversal of 21124069039 is 93096042112.

It is a balanced prime because it is at equal distance from previous prime (21124069027) and next prime (21124069051).

It is a cyclic number.

It is not a de Polignac number, because 21124069039 - 2⁵ = 21124069007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21124068989 and 21124069007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21124099039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10562034519 + 10562034520.

It is an arithmetic number, because the mean of its divisors is an integer number (10562034520).

Almost surely, 2^21124069039 is an apocalyptic number.

21124069039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21124069039 is an equidigital number, since it uses as much as digits as its factorization.

21124069039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The spelling of 21124069039 in words is "twenty-one billion, one hundred twenty-four million, sixty-nine thousand, thirty-nine".