21130140030 has 32 divisors (see below), whose sum is σ = 50814000000. Its totient is φ = 5623408032.

The previous prime is 21130139999. The next prime is 21130140041. The reversal of 21130140030 is 3004103112.

It is a super-3 number, since 3×21130140030³ (a number of 32 digits) contains 333 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 21130139991 and 21130140009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690780 + ... + 720719.

It is an arithmetic number, because the mean of its divisors is an integer number (1587937500).

Almost surely, 2^21130140030 is an apocalyptic number.

21130140030 is an abundant number, since it is smaller than the sum of its proper divisors (29683859970).

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

21130140030 is a wasteful number, since it uses less digits than its factorization.

21130140030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412008.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21130140030 its reverse (3004103112), we get a palindrome (24134243142).

The spelling of 21130140030 in words is "twenty-one billion, one hundred thirty million, one hundred forty thousand, thirty".