21124030002 has 32 divisors (see below), whose sum is σ = 42856812288. Its totient is φ = 6940020096.

The previous prime is 21124029917. The next prime is 21124030049. The reversal of 21124030002 is 20003042112.

It is a super-2 number, since 2×21124030002² (a number of 21 digits) contains 22 as substring.

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, 637783 + ... + 670085.

It is an arithmetic number, because the mean of its divisors is an integer number (1339275384).

Almost surely, 2^21124030002 is an apocalyptic number.

21124030002 is an abundant number, since it is smaller than the sum of its proper divisors (21732782286).

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

21124030002 is a wasteful number, since it uses less digits than its factorization.

21124030002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33874.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21124030002 its reverse (20003042112), we get a palindrome (41127072114).

The spelling of 21124030002 in words is "twenty-one billion, one hundred twenty-four million, thirty thousand, two".