21013111130 has 16 divisors (see below), whose sum is σ = 41262109344. Its totient is φ = 7641131280.

The previous prime is 21013111117. The next prime is 21013111153. The reversal of 21013111130 is 3111131012.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95514032 + ... + 95514251.

It is an arithmetic number, because the mean of its divisors is an integer number (2578881834).

Almost surely, 2^21013111130 is an apocalyptic number.

21013111130 is a deficient number, since it is larger than the sum of its proper divisors (20248998214).

21013111130 is a wasteful number, since it uses less digits than its factorization.

21013111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191028301.

The product of its (nonzero) digits is 18, while the sum is 14.

Adding to 21013111130 its reverse (3111131012), we get a palindrome (24124242142).

The spelling of 21013111130 in words is "twenty-one billion, thirteen million, one hundred eleven thousand, one hundred thirty".