21120301331 has 8 divisors (see below), whose sum is σ = 21487473600. Its totient is φ = 20753435880.

The previous prime is 21120301327. The next prime is 21120301369. The reversal of 21120301331 is 13310302112.

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

It is a cyclic number.

It is not a de Polignac number, because 21120301331 - 2² = 21120301327 is a prime.

It is a super-2 number, since 2×21120301331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21120306331) 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, 64400 + ... + 215378.

It is an arithmetic number, because the mean of its divisors is an integer number (2685934200).

Almost surely, 2^21120301331 is an apocalyptic number.

21120301331 is a deficient number, since it is larger than the sum of its proper divisors (367172269).

21120301331 is a wasteful number, since it uses less digits than its factorization.

21120301331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153409.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21120301331 its reverse (13310302112), we get a palindrome (34430603443).

The spelling of 21120301331 in words is "twenty-one billion, one hundred twenty million, three hundred one thousand, three hundred thirty-one".