238122111022121 has 4 divisors (see below), whose sum is σ = 238562262799044. Its totient is φ = 237681959245200.

The previous prime is 238122111022109. The next prime is 238122111022123. The reversal of 238122111022121 is 121220111221832.

It is a happy number.

238122111022121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 93542264475625 + 144579846546496 = 9671725^2 + 12024136^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238122111022121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (238122111022123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220075887650 + ... + 220075888731.

It is an arithmetic number, because the mean of its divisors is an integer number (59640565699761).

Almost surely, 2^{238122111022121} is an apocalyptic number.

It is an amenable number.

238122111022121 is a deficient number, since it is larger than the sum of its proper divisors (440151776923).

238122111022121 is an equidigital number, since it uses as much as digits as its factorization.

238122111022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440151776922.

The product of its (nonzero) digits is 1536, while the sum is 29.

Adding to 238122111022121 its reverse (121220111221832), we get a palindrome (359342222243953).

The spelling of 238122111022121 in words is "two hundred thirty-eight trillion, one hundred twenty-two billion, one hundred eleven million, twenty-two thousand, one hundred twenty-one".