122423404221 has 12 divisors (see below), whose sum is σ = 176862869820. Its totient is φ = 81602188800.

The previous prime is 122423404217. The next prime is 122423404237. The reversal of 122423404221 is 122404324221.

It is a happy number.

122423404221 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 234 + 0 + 422 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 90387416025 + 32035988196 = 300645^2 + 178986^2 .

It is not a de Polignac number, because 122423404221 - 2² = 122423404217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122423404241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1059876 + ... + 1169693.

It is an arithmetic number, because the mean of its divisors is an integer number (14738572485).

Almost surely, 2^122423404221 is an apocalyptic number.

It is an amenable number.

122423404221 is a deficient number, since it is larger than the sum of its proper divisors (54439465599).

122423404221 is a wasteful number, since it uses less digits than its factorization.

122423404221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235676 (or 2235673 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 122423404221 its reverse (122404324221), we get a palindrome (244827728442).

The spelling of 122423404221 in words is "one hundred twenty-two billion, four hundred twenty-three million, four hundred four thousand, two hundred twenty-one".