211221221110022 has 16 divisors (see below), whose sum is σ = 317132785265472. Its totient is φ = 105510309029160.

The previous prime is 211221221109937. The next prime is 211221221110111. The reversal of 211221221110022 is 220011122122112.

It is a super-2 number, since 2×211221221110022² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211221221109976 and 211221221110003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21811613 + ... + 29969799.

It is an arithmetic number, because the mean of its divisors is an integer number (19820799079092).

Almost surely, 2^{211221221110022} is an apocalyptic number.

211221221110022 is a deficient number, since it is larger than the sum of its proper divisors (105911564155450).

211221221110022 is a wasteful number, since it uses less digits than its factorization.

211221221110022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170483.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 211221221110022 its reverse (220011122122112), we get a palindrome (431232343232134).

The spelling of 211221221110022 in words is "two hundred eleven trillion, two hundred twenty-one billion, two hundred twenty-one million, one hundred ten thousand, twenty-two".