122404101021 has 10 divisors (see below), whose sum is σ = 182850570782. Its totient is φ = 81602733960.

The previous prime is 122404101019. The next prime is 122404101031. The reversal of 122404101021 is 120101404221.

122404101021 is a `hidden beast` number, since 1 + 2 + 240 + 410 + 10 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 104771979225 + 17632121796 = 323685^2 + 132786^2 .

It is not a de Polignac number, because 122404101021 - 2¹ = 122404101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122404100985 and 122404101003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122404101031) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 755580790 + ... + 755580951.

Almost surely, 2^122404101021 is an apocalyptic number.

It is an amenable number.

122404101021 is a deficient number, since it is larger than the sum of its proper divisors (60446469761).

122404101021 is an equidigital number, since it uses as much as digits as its factorization.

122404101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511161753 (or 1511161744 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 122404101021 its reverse (120101404221), we get a palindrome (242505505242).

The spelling of 122404101021 in words is "one hundred twenty-two billion, four hundred four million, one hundred one thousand, twenty-one".