121321103258 has 12 divisors (see below), whose sum is σ = 186312213738. Its totient is φ = 59249839320.

The previous prime is 121321103257. The next prime is 121321103263. The reversal of 121321103258 is 852301123121.

It can be written as a sum of positive squares in only one way, i.e., 87750435529 + 33570667729 = 296227^2 + 183223^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121321103258.

It is not an unprimeable number, because it can be changed into a prime (121321103257) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16399913 + ... + 16407308.

Almost surely, 2^121321103258 is an apocalyptic number.

121321103258 is a deficient number, since it is larger than the sum of its proper divisors (64991110480).

121321103258 is an equidigital number, since it uses as much as digits as its factorization.

121321103258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32807309 (or 32807266 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 29.

Adding to 121321103258 its reverse (852301123121), we get a palindrome (973622226379).

The spelling of 121321103258 in words is "one hundred twenty-one billion, three hundred twenty-one million, one hundred three thousand, two hundred fifty-eight".