21330332310109 has 2 divisors, whose sum is σ = 21330332310110. Its totient is φ = 21330332310108.

The previous prime is 21330332310101. The next prime is 21330332310113. The reversal of 21330332310109 is 90101323303312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15324171452100 + 6006160858009 = 3914610^2 + 2450747^2 .

It is a cyclic number.

It is not a de Polignac number, because 21330332310109 - 2³ = 21330332310101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21330332310101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10665166155054 + 10665166155055.

It is an arithmetic number, because the mean of its divisors is an integer number (10665166155055).

Almost surely, 2^{21330332310109} is an apocalyptic number.

It is an amenable number.

21330332310109 is a deficient number, since it is larger than the sum of its proper divisors (1).

21330332310109 is an equidigital number, since it uses as much as digits as its factorization.

21330332310109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 21330332310109 in words is "twenty-one trillion, three hundred thirty billion, three hundred thirty-two million, three hundred ten thousand, one hundred nine".