121321338 has 16 divisors (see below), whose sum is σ = 243474336. Its totient is φ = 40301840.

The previous prime is 121321307. The next prime is 121321339. The reversal of 121321338 is 833123121.

It is a super-2 number, since 2×121321338² = 29437734108220488, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121321339) 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, 32748 + ... + 36263.

It is an arithmetic number, because the mean of its divisors is an integer number (15217146).

Almost surely, 2^121321338 is an apocalyptic number.

121321338 is an abundant number, since it is smaller than the sum of its proper divisors (122152998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121321338 is a wasteful number, since it uses less digits than its factorization.

121321338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69309.

The product of its digits is 864, while the sum is 24.

The square root of 121321338 is about 11014.5965881643. The cubic root of 121321338 is about 495.0461991367.

Adding to 121321338 its reverse (833123121), we get a palindrome (954444459).

The spelling of 121321338 in words is "one hundred twenty-one million, three hundred twenty-one thousand, three hundred thirty-eight".