21126531052246 has 16 divisors (see below), whose sum is σ = 31698144404208. Its totient is φ = 10560483252000.

The previous prime is 21126531052217. The next prime is 21126531052271. The reversal of 21126531052246 is 64225013562112.

It is a junction number, because it is equal to n+sod(n) for n = 21126531052199 and 21126531052208.

It is a congruent number.

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, 141663856 + ... + 141812908.

It is an arithmetic number, because the mean of its divisors is an integer number (1981134025263).

Almost surely, 2^{21126531052246} is an apocalyptic number.

21126531052246 is a deficient number, since it is larger than the sum of its proper divisors (10571613351962).

21126531052246 is a wasteful number, since it uses less digits than its factorization.

21126531052246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167247.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 21126531052246 in words is "twenty-one trillion, one hundred twenty-six billion, five hundred thirty-one million, fifty-two thousand, two hundred forty-six".