21211322023222 has 32 divisors (see below), whose sum is σ = 33556497960960. Its totient is φ = 10035915072480.

The previous prime is 21211322023193. The next prime is 21211322023267. The reversal of 21211322023222 is 22232022311212.

It is a super-2 number, since 2×21211322023222² (a number of 27 digits) contains 22 as substring.

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, 2436604 + ... + 6954112.

It is an arithmetic number, because the mean of its divisors is an integer number (1048640561280).

Almost surely, 2^{21211322023222} is an apocalyptic number.

21211322023222 is a deficient number, since it is larger than the sum of its proper divisors (12345175937738).

21211322023222 is a wasteful number, since it uses less digits than its factorization.

21211322023222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4518628.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 21211322023222 its reverse (22232022311212), we get a palindrome (43443344334434).

The spelling of 21211322023222 in words is "twenty-one trillion, two hundred eleven billion, three hundred twenty-two million, twenty-three thousand, two hundred twenty-two".