20130221959 has 2 divisors, whose sum is σ = 20130221960. Its totient is φ = 20130221958.

The previous prime is 20130221957. The next prime is 20130221981. The reversal of 20130221959 is 95912203102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20130221959 - 2¹ = 20130221957 is a prime.

It is a super-2 number, since 2×20130221959² (a number of 21 digits) contains 22 as substring.

Together with 20130221957, 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 (20130221957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065110979 + 10065110980.

It is an arithmetic number, because the mean of its divisors is an integer number (10065110980).

Almost surely, 2^20130221959 is an apocalyptic number.

20130221959 is a deficient number, since it is larger than the sum of its proper divisors (1).

20130221959 is an equidigital number, since it uses as much as digits as its factorization.

20130221959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 34.

The spelling of 20130221959 in words is "twenty billion, one hundred thirty million, two hundred twenty-one thousand, nine hundred fifty-nine".