121517632238 has 16 divisors (see below), whose sum is σ = 193008705120. Its totient is φ = 57181771776.

The previous prime is 121517632231. The next prime is 121517632241. The reversal of 121517632238 is 832236715121.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121517632195 and 121517632204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121517632231) 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, 650495 + ... + 816197.

It is an arithmetic number, because the mean of its divisors is an integer number (12063044070).

Almost surely, 2^121517632238 is an apocalyptic number.

121517632238 is a deficient number, since it is larger than the sum of its proper divisors (71491072882).

121517632238 is a wasteful number, since it uses less digits than its factorization.

121517632238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187291.

The product of its digits is 120960, while the sum is 41.

The spelling of 121517632238 in words is "one hundred twenty-one billion, five hundred seventeen million, six hundred thirty-two thousand, two hundred thirty-eight".