21045254030050 has 48 divisors (see below), whose sum is σ = 41205061144800. Its totient is φ = 7974914140800.

The previous prime is 21045254029997. The next prime is 21045254030063. The reversal of 21045254030050 is 5003045254012.

It is a junction number, because it is equal to n+sod(n) for n = 21045254029994 and 21045254030021.

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, 74804145 + ... + 75084955.

It is an arithmetic number, because the mean of its divisors is an integer number (858438773850).

Almost surely, 2^{21045254030050} is an apocalyptic number.

21045254030050 is a deficient number, since it is larger than the sum of its proper divisors (20159807114750).

21045254030050 is a wasteful number, since it uses less digits than its factorization.

21045254030050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359731 (or 359726 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 21045254030050 its reverse (5003045254012), we get a palindrome (26048299284062).

The spelling of 21045254030050 in words is "twenty-one trillion, forty-five billion, two hundred fifty-four million, thirty thousand, fifty".