21310104501 has 24 divisors (see below), whose sum is σ = 35602432320. Its totient is φ = 12030486336.

The previous prime is 21310104499. The next prime is 21310104523. The reversal of 21310104501 is 10540101312.

21310104501 is a `hidden beast` number, since 213 + 1 + 0 + 1 + 0 + 450 + 1 = 666.

It is not a de Polignac number, because 21310104501 - 2¹ = 21310104499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310104901) 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, 2032456 + ... + 2042913.

It is an arithmetic number, because the mean of its divisors is an integer number (1483434680).

Almost surely, 2^21310104501 is an apocalyptic number.

21310104501 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21310104501 is a deficient number, since it is larger than the sum of its proper divisors (14292327819).

21310104501 is a wasteful number, since it uses less digits than its factorization.

21310104501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4075465 (or 4075462 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

Adding to 21310104501 its reverse (10540101312), we get a palindrome (31850205813).

The spelling of 21310104501 in words is "twenty-one billion, three hundred ten million, one hundred four thousand, five hundred one".