21210221211022 has 32 divisors (see below), whose sum is σ = 33248578271040. Its totient is φ = 10128753803520.

The previous prime is 21210221211007. The next prime is 21210221211043. The reversal of 21210221211022 is 22011212201212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262589122 + ... + 262669882.

It is an arithmetic number, because the mean of its divisors is an integer number (1039018070970).

Almost surely, 2^{21210221211022} is an apocalyptic number.

21210221211022 is a deficient number, since it is larger than the sum of its proper divisors (12038357060018).

21210221211022 is a wasteful number, since it uses less digits than its factorization.

21210221211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89308.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21210221211022 its reverse (22011212201212), we get a palindrome (43221433412234).

The spelling of 21210221211022 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-one million, two hundred eleven thousand, twenty-two".