21320110053 has 24 divisors (see below), whose sum is σ = 33941683776. Its totient is φ = 12788064000.

The previous prime is 21320110051. The next prime is 21320110079. The reversal of 21320110053 is 35001102312.

It is not a de Polignac number, because 21320110053 - 2¹ = 21320110051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21320110051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1100473 + ... + 1119678.

It is an arithmetic number, because the mean of its divisors is an integer number (1414236824).

Almost surely, 2^21320110053 is an apocalyptic number.

It is an amenable number.

21320110053 is a deficient number, since it is larger than the sum of its proper divisors (12621573723).

21320110053 is a wasteful number, since it uses less digits than its factorization.

21320110053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220265 (or 2220262 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

Adding to 21320110053 its reverse (35001102312), we get a palindrome (56321212365).

The spelling of 21320110053 in words is "twenty-one billion, three hundred twenty million, one hundred ten thousand, fifty-three".