21220032130002 has 32 divisors (see below), whose sum is σ = 47159309937600. Its totient is φ = 7072791596064.

The previous prime is 21220032129991. The next prime is 21220032130009. The reversal of 21220032130002 is 20003123002212.

21220032130002 is a `hidden beast` number, since 21 + 2 + 20 + 0 + 321 + 300 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21220032130009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14647668 + ... + 16031039.

It is an arithmetic number, because the mean of its divisors is an integer number (1473728435550).

Almost surely, 2^{21220032130002} is an apocalyptic number.

21220032130002 is an abundant number, since it is smaller than the sum of its proper divisors (25939277807598).

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

21220032130002 is a wasteful number, since it uses less digits than its factorization.

21220032130002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30691527 (or 30691521 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 21220032130002 its reverse (20003123002212), we get a palindrome (41223155132214).

The spelling of 21220032130002 in words is "twenty-one trillion, two hundred twenty billion, thirty-two million, one hundred thirty thousand, two".