122423010021 has 36 divisors (see below), whose sum is σ = 191560534308. Its totient is φ = 75306396672.

The previous prime is 122423010007. The next prime is 122423010077. The reversal of 122423010021 is 120010324221.

It is a happy number.

122423010021 is a `hidden beast` number, since 122 + 423 + 0 + 100 + 21 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 14682168900 + 107740841121 = 121170^2 + 328239^2 .

It is not a de Polignac number, because 122423010021 - 2³¹ = 120275526373 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122423009976 and 122423010003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122423010091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4026151 + ... + 4056443.

It is an arithmetic number, because the mean of its divisors is an integer number (5321125953).

Almost surely, 2^122423010021 is an apocalyptic number.

It is an amenable number.

122423010021 is a deficient number, since it is larger than the sum of its proper divisors (69137524287).

122423010021 is a wasteful number, since it uses less digits than its factorization.

122423010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32982 (or 32966 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 122423010021 its reverse (120010324221), we get a palindrome (242433334242).

It can be divided in two parts, 1224230100 and 21, that added together give a square (1224230121 = 34989²).

The spelling of 122423010021 in words is "one hundred twenty-two billion, four hundred twenty-three million, ten thousand, twenty-one".