1121022331 has 16 divisors (see below), whose sum is σ = 1330062048. Its totient is φ = 931392000.

The previous prime is 1121022281. The next prime is 1121022389. The reversal of 1121022331 is 1332201211.

It is not a de Polignac number, because 1121022331 - 2¹¹ = 1121020283 is a prime.

It is a super-2 number, since 2×1121022331² = 2513382133201347122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121022391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24366 + ... + 53251.

It is an arithmetic number, because the mean of its divisors is an integer number (83128878).

Almost surely, 2^1121022331 is an apocalyptic number.

1121022331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1121022331 is a deficient number, since it is larger than the sum of its proper divisors (209039717).

1121022331 is a wasteful number, since it uses less digits than its factorization.

1121022331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77742.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1121022331 is about 33481.6715681879. The cubic root of 1121022331 is about 1038.8147033066.

Adding to 1121022331 its reverse (1332201211), we get a palindrome (2453223542).

The spelling of 1121022331 in words is "one billion, one hundred twenty-one million, twenty-two thousand, three hundred thirty-one".