21011021032210 has 32 divisors (see below), whose sum is σ = 41666500056384. Its totient is φ = 7564724040000.

The previous prime is 21011021032193. The next prime is 21011021032219. The reversal of 21011021032210 is 1223012011012.

It is not an unprimeable number, because it can be changed into a prime (21011021032219) by changing a digit.

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, 945579396 + ... + 945601615.

It is an arithmetic number, because the mean of its divisors is an integer number (1302078126762).

Almost surely, 2^{21011021032210} is an apocalyptic number.

21011021032210 is a deficient number, since it is larger than the sum of its proper divisors (20655479024174).

21011021032210 is a wasteful number, since it uses less digits than its factorization.

21011021032210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1891181130.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21011021032210 its reverse (1223012011012), we get a palindrome (22234033043222).

The spelling of 21011021032210 in words is "twenty-one trillion, eleven billion, twenty-one million, thirty-two thousand, two hundred ten".