21211223303130 has 128 divisors (see below), whose sum is σ = 59754098165760. Its totient is φ = 4717061256960.

The previous prime is 21211223303099. The next prime is 21211223303269. The reversal of 21211223303130 is 3130332211212.

It is a self number, because there is not a number n which added to its sum of digits gives 21211223303130.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 336339541 + ... + 336402599.

It is an arithmetic number, because the mean of its divisors is an integer number (466828891920).

Almost surely, 2^{21211223303130} is an apocalyptic number.

21211223303130 is an abundant number, since it is smaller than the sum of its proper divisors (38542874862630).

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

21211223303130 is a wasteful number, since it uses less digits than its factorization.

21211223303130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106404.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21211223303130 its reverse (3130332211212), we get a palindrome (24341555514342).

The spelling of 21211223303130 in words is "twenty-one trillion, two hundred eleven billion, two hundred twenty-three million, three hundred three thousand, one hundred thirty".