21020513150059 has 2 divisors, whose sum is σ = 21020513150060. Its totient is φ = 21020513150058.

The previous prime is 21020513149949. The next prime is 21020513150071. The reversal of 21020513150059 is 95005131502012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21020513150059 - 2⁴¹ = 18821489894507 is a prime.

It is not a weakly prime, because it can be changed into another prime (21020513150759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10510256575029 + 10510256575030.

It is an arithmetic number, because the mean of its divisors is an integer number (10510256575030).

Almost surely, 2^{21020513150059} is an apocalyptic number.

21020513150059 is a deficient number, since it is larger than the sum of its proper divisors (1).

21020513150059 is an equidigital number, since it uses as much as digits as its factorization.

21020513150059 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13500, while the sum is 34.

The spelling of 21020513150059 in words is "twenty-one trillion, twenty billion, five hundred thirteen million, one hundred fifty thousand, fifty-nine".