21130301121 has 8 divisors (see below), whose sum is σ = 28194260160. Its totient is φ = 14076604752.

The previous prime is 21130301111. The next prime is 21130301167. The reversal of 21130301121 is 12110303112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21130301121 - 2⁷ = 21130300993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21130301121.

It is not an unprimeable number, because it can be changed into a prime (21130301111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2560861 + ... + 2569098.

It is an arithmetic number, because the mean of its divisors is an integer number (3524282520).

Almost surely, 2^21130301121 is an apocalyptic number.

It is an amenable number.

21130301121 is a deficient number, since it is larger than the sum of its proper divisors (7063959039).

21130301121 is a wasteful number, since it uses less digits than its factorization.

21130301121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5131335.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 21130301121 its reverse (12110303112), we get a palindrome (33240604233).

The spelling of 21130301121 in words is "twenty-one billion, one hundred thirty million, three hundred one thousand, one hundred twenty-one".