21031214331130 has 16 divisors (see below), whose sum is σ = 37917541051560. Its totient is φ = 8398851231232.

The previous prime is 21031214331067. The next prime is 21031214331161. The reversal of 21031214331130 is 3113341213012.

It can be written as a sum of positive squares in 4 ways, for example, as 17914962016449 + 3116252314681 = 4232607^2 + 1765291^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21031214331095 and 21031214331104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704306175 + ... + 1704318514.

Almost surely, 2^{21031214331130} is an apocalyptic number.

21031214331130 is a deficient number, since it is larger than the sum of its proper divisors (16886326720430).

21031214331130 is a wasteful number, since it uses less digits than its factorization.

21031214331130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408625313.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 21031214331130 its reverse (3113341213012), we get a palindrome (24144555544142).

The spelling of 21031214331130 in words is "twenty-one trillion, thirty-one billion, two hundred fourteen million, three hundred thirty-one thousand, one hundred thirty".