21110230005 has 32 divisors (see below), whose sum is σ = 33987582720. Its totient is φ = 11188477440.

The previous prime is 21110229977. The next prime is 21110230007. The reversal of 21110230005 is 50003201112.

It is not a de Polignac number, because 21110230005 - 2¹⁶ = 21110164469 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21110230007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6576841 + ... + 6580049.

It is an arithmetic number, because the mean of its divisors is an integer number (1062111960).

Almost surely, 2^21110230005 is an apocalyptic number.

It is an amenable number.

21110230005 is a deficient number, since it is larger than the sum of its proper divisors (12877352715).

21110230005 is a wasteful number, since it uses less digits than its factorization.

21110230005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5821.

The product of its (nonzero) digits is 60, while the sum is 15.

Adding to 21110230005 its reverse (50003201112), we get a palindrome (71113431117).

The spelling of 21110230005 in words is "twenty-one billion, one hundred ten million, two hundred thirty thousand, five".