21033201530 has 32 divisors (see below), whose sum is σ = 41383778688. Its totient is φ = 7633211200.

The previous prime is 21033201521. The next prime is 21033201593. The reversal of 21033201530 is 3510233012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134741 + ... + 245400.

It is an arithmetic number, because the mean of its divisors is an integer number (1293243084).

Almost surely, 2^21033201530 is an apocalyptic number.

21033201530 is a deficient number, since it is larger than the sum of its proper divisors (20350577158).

21033201530 is a wasteful number, since it uses less digits than its factorization.

21033201530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380662.

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 21033201530 its reverse (3510233012), we get a palindrome (24543434542).

The spelling of 21033201530 in words is "twenty-one billion, thirty-three million, two hundred one thousand, five hundred thirty".