21245135350052 has 12 divisors (see below), whose sum is σ = 37186760048256. Its totient is φ = 10620346764840.

The previous prime is 21245135350027. The next prime is 21245135350099. The reversal of 21245135350052 is 25005353154212.

It is a junction number, because it is equal to n+sod(n) for n = 21245135349988 and 21245135350015.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555206024 + ... + 555244287.

It is an arithmetic number, because the mean of its divisors is an integer number (3098896670688).

Almost surely, 2^{21245135350052} is an apocalyptic number.

It is an amenable number.

21245135350052 is a deficient number, since it is larger than the sum of its proper divisors (15941624698204).

21245135350052 is a wasteful number, since it uses less digits than its factorization.

21245135350052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110455098 (or 1110455096 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 38.

The spelling of 21245135350052 in words is "twenty-one trillion, two hundred forty-five billion, one hundred thirty-five million, three hundred fifty thousand, fifty-two".