21221021032130 has 64 divisors (see below), whose sum is σ = 39434026314240. Its totient is φ = 8217776352000.

The previous prime is 21221021032087. The next prime is 21221021032157. The reversal of 21221021032130 is 3123012012212.

It is a super-2 number, since 2×21221021032130² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 50155001 + ... + 50576339.

It is an arithmetic number, because the mean of its divisors is an integer number (616156661160).

Almost surely, 2^{21221021032130} is an apocalyptic number.

21221021032130 is a deficient number, since it is larger than the sum of its proper divisors (18213005282110).

21221021032130 is a wasteful number, since it uses less digits than its factorization.

21221021032130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422555.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21221021032130 its reverse (3123012012212), we get a palindrome (24344033044342).

The spelling of 21221021032130 in words is "twenty-one trillion, two hundred twenty-one billion, twenty-one million, thirty-two thousand, one hundred thirty".