122212400221 has 8 divisors (see below), whose sum is σ = 126162245888. Its totient is φ = 118263024000.

The previous prime is 122212400201. The next prime is 122212400227. The reversal of 122212400221 is 122004212221.

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 122212400221 - 2⁹ = 122212399709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122212400227) 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, 456301 + ... + 672781.

It is an arithmetic number, because the mean of its divisors is an integer number (15770280736).

Almost surely, 2^122212400221 is an apocalyptic number.

It is an amenable number.

122212400221 is a deficient number, since it is larger than the sum of its proper divisors (3949845667).

122212400221 is a wasteful number, since it uses less digits than its factorization.

122212400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234723.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 122212400221 its reverse (122004212221), we get a palindrome (244216612442).

The spelling of 122212400221 in words is "one hundred twenty-two billion, two hundred twelve million, four hundred thousand, two hundred twenty-one".