1121121031321 has 4 divisors (see below), whose sum is σ = 1132005701632. Its totient is φ = 1110236361012.

The previous prime is 1121121031313. The next prime is 1121121031397. The reversal of 1121121031321 is 1231301211211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121121031321 - 2³ = 1121121031313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121121031301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5442335001 + ... + 5442335206.

It is an arithmetic number, because the mean of its divisors is an integer number (283001425408).

Almost surely, 2^{1121121031321} is an apocalyptic number.

It is an amenable number.

1121121031321 is a deficient number, since it is larger than the sum of its proper divisors (10884670311).

1121121031321 is a wasteful number, since it uses less digits than its factorization.

1121121031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10884670310.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121121031321 its reverse (1231301211211), we get a palindrome (2352422242532).

The spelling of 1121121031321 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, thirty-one thousand, three hundred twenty-one".