122211210221221 has 8 divisors (see below), whose sum is σ = 133344510660000. Its totient is φ = 111081774852240.

The previous prime is 122211210221189. The next prime is 122211210221257. The reversal of 122211210221221 is 122122012112221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122211210221221 - 2⁵ = 122211210221189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122211210221192 and 122211210221201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122211210221621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966201331 + ... + 966327808.

It is an arithmetic number, because the mean of its divisors is an integer number (16668063832500).

Almost surely, 2^{122211210221221} is an apocalyptic number.

122211210221221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122211210221221 is a deficient number, since it is larger than the sum of its proper divisors (11133300438779).

122211210221221 is a wasteful number, since it uses less digits than its factorization.

122211210221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1932534899.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 122211210221221 its reverse (122122012112221), we get a palindrome (244333222333442).

The spelling of 122211210221221 in words is "one hundred twenty-two trillion, two hundred eleven billion, two hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".