21425210501130 has 48 divisors (see below), whose sum is σ = 55705899674880. Its totient is φ = 5713353326304.

The previous prime is 21425210501129. The next prime is 21425210501239. The reversal of 21425210501130 is 3110501252412.

It is a happy number.

21425210501130 is a `hidden beast` number, since 2 + 1 + 4 + 2 + 5 + 21 + 0 + 501 + 130 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21425210501094 and 21425210501103.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15489919 + ... + 16816301.

It is an arithmetic number, because the mean of its divisors is an integer number (1160539576560).

Almost surely, 2^{21425210501130} is an apocalyptic number.

21425210501130 is an abundant number, since it is smaller than the sum of its proper divisors (34280689173750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21425210501130 is a wasteful number, since it uses less digits than its factorization.

21425210501130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505875 (or 1505872 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

Adding to 21425210501130 its reverse (3110501252412), we get a palindrome (24535711753542).

The spelling of 21425210501130 in words is "twenty-one trillion, four hundred twenty-five billion, two hundred ten million, five hundred one thousand, one hundred thirty".