21150216153230 has 16 divisors (see below), whose sum is σ = 38087138078064. Its totient is φ = 8456364460800.

The previous prime is 21150216153221. The next prime is 21150216153251. The reversal of 21150216153230 is 3235161205112.

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, 465226196 + ... + 465271655.

It is an arithmetic number, because the mean of its divisors is an integer number (2380446129879).

Almost surely, 2^{21150216153230} is an apocalyptic number.

21150216153230 is a deficient number, since it is larger than the sum of its proper divisors (16936921924834).

21150216153230 is a wasteful number, since it uses less digits than its factorization.

21150216153230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930500131.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 21150216153230 its reverse (3235161205112), we get a palindrome (24385377358342).

The spelling of 21150216153230 in words is "twenty-one trillion, one hundred fifty billion, two hundred sixteen million, one hundred fifty-three thousand, two hundred thirty".