21131023001330 has 48 divisors (see below), whose sum is σ = 42024613142232. Its totient is φ = 7644194764800.

The previous prime is 21131023001321. The next prime is 21131023001411. The reversal of 21131023001330 is 3310032013112.

It can be written as a sum of positive squares in 4 ways, for example, as 13893056020921 + 7237966980409 = 3727339^2 + 2690347^2 .

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, 45009101 + ... + 45476160.

Almost surely, 2^{21131023001330} is an apocalyptic number.

21131023001330 is a deficient number, since it is larger than the sum of its proper divisors (20893590140902).

21131023001330 is a wasteful number, since it uses less digits than its factorization.

21131023001330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90485483 (or 90485472 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 21131023001330 its reverse (3310032013112), we get a palindrome (24441055014442).

The spelling of 21131023001330 in words is "twenty-one trillion, one hundred thirty-one billion, twenty-three million, one thousand, three hundred thirty".