1121031312330 has 128 divisors (see below), whose sum is σ = 2781231344640. Its totient is φ = 288998760960.

The previous prime is 1121031312221. The next prime is 1121031312353. The reversal of 1121031312330 is 332131301211.

It is a happy number.

It is a super-2 number, since 2×1121031312330² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1121031312297 and 1121031312306.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93514597 + ... + 93526583.

It is an arithmetic number, because the mean of its divisors is an integer number (21728369880).

Almost surely, 2^{1121031312330} is an apocalyptic number.

1121031312330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121031312330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1390615672320).

1121031312330 is an abundant number, since it is smaller than the sum of its proper divisors (1660200032310).

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

1121031312330 is a wasteful number, since it uses less digits than its factorization.

1121031312330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12724.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1121031312330 its reverse (332131301211), we get a palindrome (1453162613541).

The spelling of 1121031312330 in words is "one trillion, one hundred twenty-one billion, thirty-one million, three hundred twelve thousand, three hundred thirty".