21520532303150 has 12 divisors (see below), whose sum is σ = 40028190083952. Its totient is φ = 8608212921240.

The previous prime is 21520532303111. The next prime is 21520532303191. The reversal of 21520532303150 is 5130323502512.

It is a super-2 number, since 2×21520532303150² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 215205322982 + ... + 215205323081.

It is an arithmetic number, because the mean of its divisors is an integer number (3335682506996).

Almost surely, 2^{21520532303150} is an apocalyptic number.

21520532303150 is a deficient number, since it is larger than the sum of its proper divisors (18507657780802).

21520532303150 is a wasteful number, since it uses less digits than its factorization.

21520532303150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430410646075 (or 430410646070 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

Adding to 21520532303150 its reverse (5130323502512), we get a palindrome (26650855805662).

The spelling of 21520532303150 in words is "twenty-one trillion, five hundred twenty billion, five hundred thirty-two million, three hundred three thousand, one hundred fifty".