21130313150356 has 12 divisors (see below), whose sum is σ = 37082801692692. Its totient is φ = 10535226952448.

The previous prime is 21130313150351. The next prime is 21130313150423. The reversal of 21130313150356 is 65305131303112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14843559274756 + 6286753875600 = 3852734^2 + 2507340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130313150351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7482404095 + ... + 7482406918.

It is an arithmetic number, because the mean of its divisors is an integer number (3090233474391).

Almost surely, 2^{21130313150356} is an apocalyptic number.

It is an amenable number.

21130313150356 is a deficient number, since it is larger than the sum of its proper divisors (15952488542336).

21130313150356 is a wasteful number, since it uses less digits than its factorization.

21130313150356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14964811370 (or 14964811368 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 34.

Adding to 21130313150356 its reverse (65305131303112), we get a palindrome (86435444453468).

The spelling of 21130313150356 in words is "twenty-one trillion, one hundred thirty billion, three hundred thirteen million, one hundred fifty thousand, three hundred fifty-six".