21332100313 has 2 divisors, whose sum is σ = 21332100314. Its totient is φ = 21332100312.

The previous prime is 21332100311. The next prime is 21332100341. The reversal of 21332100313 is 31300123312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20498507929 + 833592384 = 143173^2 + 28872^2 .

It is a cyclic number.

It is not a de Polignac number, because 21332100313 - 2¹ = 21332100311 is a prime.

Together with 21332100311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21332100311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10666050156 + 10666050157.

It is an arithmetic number, because the mean of its divisors is an integer number (10666050157).

Almost surely, 2^21332100313 is an apocalyptic number.

It is an amenable number.

21332100313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21332100313 is an equidigital number, since it uses as much as digits as its factorization.

21332100313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21332100313 its reverse (31300123312), we get a palindrome (52632223625).

The spelling of 21332100313 in words is "twenty-one billion, three hundred thirty-two million, one hundred thousand, three hundred thirteen".