21130313150355 has 16 divisors (see below), whose sum is σ = 33810566831520. Its totient is φ = 11268811749888.

The previous prime is 21130313150351. The next prime is 21130313150423. The reversal of 21130313150355 is 55305131303112.

It is not a de Polignac number, because 21130313150355 - 2² = 21130313150351 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 42783592 + ... + 43274661.

It is an arithmetic number, because the mean of its divisors is an integer number (2113160426970).

Almost surely, 2^{21130313150355} is an apocalyptic number.

21130313150355 is a deficient number, since it is larger than the sum of its proper divisors (12680253681165).

21130313150355 is a wasteful number, since it uses less digits than its factorization.

21130313150355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86074630.

The product of its (nonzero) digits is 20250, while the sum is 33.

Adding to 21130313150355 its reverse (55305131303112), we get a palindrome (76435444453467).

The spelling of 21130313150355 in words is "twenty-one trillion, one hundred thirty billion, three hundred thirteen million, one hundred fifty thousand, three hundred fifty-five".