238121111 has 8 divisors (see below), whose sum is σ = 240605664. Its totient is φ = 235648800.

The previous prime is 238121099. The next prime is 238121113. The reversal of 238121111 is 111121832.

It is a happy number.

238121111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-238121111 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 (238121113) 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, 38981 + ... + 44673.

It is an arithmetic number, because the mean of its divisors is an integer number (30075708).

Almost surely, 2^238121111 is an apocalyptic number.

238121111 is a deficient number, since it is larger than the sum of its proper divisors (2484553).

238121111 is a wasteful number, since it uses less digits than its factorization.

238121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121.

The product of its digits is 96, while the sum is 20.

The square root of 238121111 is about 15431.1733513690. The cubic root of 238121111 is about 619.8205437958.

Adding to 238121111 its reverse (111121832), we get a palindrome (349242943).

The spelling of 238121111 in words is "two hundred thirty-eight million, one hundred twenty-one thousand, one hundred eleven".