21021122211022 has 16 divisors (see below), whose sum is σ = 31610108300544. Its totient is φ = 10484427571000.

The previous prime is 21021122210947. The next prime is 21021122211043. The reversal of 21021122211022 is 22011222112012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3152997 + ... + 7209967.

It is an arithmetic number, because the mean of its divisors is an integer number (1975631768784).

Almost surely, 2^{21021122211022} is an apocalyptic number.

21021122211022 is a deficient number, since it is larger than the sum of its proper divisors (10588986089522).

21021122211022 is a wasteful number, since it uses less digits than its factorization.

21021122211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4063415.

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

Adding to 21021122211022 its reverse (22011222112012), we get a palindrome (43032344323034).

It can be divided in two parts, 2102112 and 2211022, that added together give a palindrome (4313134).

The spelling of 21021122211022 in words is "twenty-one trillion, twenty-one billion, one hundred twenty-two million, two hundred eleven thousand, twenty-two".