121210238 has 16 divisors (see below), whose sum is σ = 192734640. Its totient is φ = 56973696.

The previous prime is 121210237. The next prime is 121210333. The reversal of 121210238 is 832012121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210231) 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, 39773 + ... + 42711.

It is an arithmetic number, because the mean of its divisors is an integer number (12045915).

Almost surely, 2^121210238 is an apocalyptic number.

121210238 is a deficient number, since it is larger than the sum of its proper divisors (71524402).

121210238 is a wasteful number, since it uses less digits than its factorization.

121210238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4171.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 121210238 is about 11009.5521253137. The cubic root of 121210238 is about 494.8950401545.

Adding to 121210238 its reverse (832012121), we get a palindrome (953222359).

The spelling of 121210238 in words is "one hundred twenty-one million, two hundred ten thousand, two hundred thirty-eight".