21120030411 has 8 divisors (see below), whose sum is σ = 28161849744. Its totient is φ = 14079115680.

The previous prime is 21120030397. The next prime is 21120030433. The reversal of 21120030411 is 11403002112.

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

It is not a de Polignac number, because 21120030411 - 2¹³ = 21120022219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21120032411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169656 + ... + 266501.

It is an arithmetic number, because the mean of its divisors is an integer number (3520231218).

Almost surely, 2^21120030411 is an apocalyptic number.

21120030411 is a deficient number, since it is larger than the sum of its proper divisors (7041819333).

21120030411 is a wasteful number, since it uses less digits than its factorization.

21120030411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452301.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21120030411 its reverse (11403002112), we get a palindrome (32523032523).

The spelling of 21120030411 in words is "twenty-one billion, one hundred twenty million, thirty thousand, four hundred eleven".