121321032103312 has 80 divisors (see below), whose sum is σ = 243752566837248. Its totient is φ = 58435520094720.

The previous prime is 121321032103309. The next prime is 121321032103367. The reversal of 121321032103312 is 213301230123121.

It is a super-2 number, since 2×121321032103312² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124934398 + ... + 125901730.

Almost surely, 2^{121321032103312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121321032103312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121876283418624).

121321032103312 is an abundant number, since it is smaller than the sum of its proper divisors (122431534733936).

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

121321032103312 is a wasteful number, since it uses less digits than its factorization.

121321032103312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968528 (or 968522 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 121321032103312 its reverse (213301230123121), we get a palindrome (334622262226433).

The spelling of 121321032103312 in words is "one hundred twenty-one trillion, three hundred twenty-one billion, thirty-two million, one hundred three thousand, three hundred twelve".