1121221210331 has 8 divisors (see below), whose sum is σ = 1249658315280. Its totient is φ = 999726651648.

The previous prime is 1121221210283. The next prime is 1121221210337. The reversal of 1121221210331 is 1330121221211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1121221210331 - 2¹⁰ = 1121221209307 is a prime.

It is a super-2 number, since 2×1121221210331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121221210337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1735636226 + ... + 1735636871.

It is an arithmetic number, because the mean of its divisors is an integer number (156207289410).

Almost surely, 2^{1121221210331} is an apocalyptic number.

1121221210331 is a deficient number, since it is larger than the sum of its proper divisors (128437104949).

1121221210331 is a wasteful number, since it uses less digits than its factorization.

1121221210331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3471273133.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1121221210331 its reverse (1330121221211), we get a palindrome (2451342431542).

The spelling of 1121221210331 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred ten thousand, three hundred thirty-one".