21011330322210 has 32 divisors (see below), whose sum is σ = 51117976241280. Its totient is φ = 5526267700608.

The previous prime is 21011330322197. The next prime is 21011330322263. The reversal of 21011330322210 is 1222303311012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4797105190 + ... + 4797109569.

It is an arithmetic number, because the mean of its divisors is an integer number (1597436757540).

Almost surely, 2^{21011330322210} is an apocalyptic number.

21011330322210 is an abundant number, since it is smaller than the sum of its proper divisors (30106645919070).

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

21011330322210 is a wasteful number, since it uses less digits than its factorization.

21011330322210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9594214842.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21011330322210 its reverse (1222303311012), we get a palindrome (22233633633222).

The spelling of 21011330322210 in words is "twenty-one trillion, eleven billion, three hundred thirty million, three hundred twenty-two thousand, two hundred ten".