21120313302311 has 4 divisors (see below), whose sum is σ = 21417782503824. Its totient is φ = 20822844100800.

The previous prime is 21120313302281. The next prime is 21120313302353. The reversal of 21120313302311 is 11320331302112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21120313302311 - 2¹⁰ = 21120313301287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120313302611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148734600650 + ... + 148734600791.

It is an arithmetic number, because the mean of its divisors is an integer number (5354445625956).

Almost surely, 2^{21120313302311} is an apocalyptic number.

21120313302311 is a deficient number, since it is larger than the sum of its proper divisors (297469201513).

21120313302311 is an equidigital number, since it uses as much as digits as its factorization.

21120313302311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297469201512.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 21120313302311 its reverse (11320331302112), we get a palindrome (32440644604423).

The spelling of 21120313302311 in words is "twenty-one trillion, one hundred twenty billion, three hundred thirteen million, three hundred two thousand, three hundred eleven".