21369003084 has 72 divisors (see below), whose sum is σ = 63459478992. Its totient is φ = 5977342080.

The previous prime is 21369003083. The next prime is 21369003101. The reversal of 21369003084 is 48030096312.

It is a super-2 number, since 2×21369003084² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21369003083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2070319 + ... + 2080614.

Almost surely, 2^21369003084 is an apocalyptic number.

It is an amenable number.

21369003084 is an abundant number, since it is smaller than the sum of its proper divisors (42090475908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21369003084 is a wasteful number, since it uses less digits than its factorization.

21369003084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4150967 (or 4150962 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 21369003084 its reverse (48030096312), we get a palindrome (69399099396).

The spelling of 21369003084 in words is "twenty-one billion, three hundred sixty-nine million, three thousand, eighty-four".