1121445523 has 8 divisors (see below), whose sum is σ = 1276586496. Its totient is φ = 975169800.

The previous prime is 1121445517. The next prime is 1121445557. The reversal of 1121445523 is 3255441211.

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

It is not a de Polignac number, because 1121445523 - 2²¹ = 1119348371 is a prime.

It is a super-2 number, since 2×1121445523² = 2515280122113487058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121445491 and 1121445500.

It is not an unprimeable number, because it can be changed into a prime (1121445583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2216043 + ... + 2216548.

It is an arithmetic number, because the mean of its divisors is an integer number (159573312).

Almost surely, 2^1121445523 is an apocalyptic number.

1121445523 is a deficient number, since it is larger than the sum of its proper divisors (155140973).

1121445523 is a wasteful number, since it uses less digits than its factorization.

1121445523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4432625.

The product of its digits is 4800, while the sum is 28.

The square root of 1121445523 is about 33487.9907280207. The cubic root of 1121445523 is about 1038.9454062527.

Adding to 1121445523 its reverse (3255441211), we get a palindrome (4376886734).

It can be divided in two parts, 1121 and 445523, that added together give a palindrome (446644).

The spelling of 1121445523 in words is "one billion, one hundred twenty-one million, four hundred forty-five thousand, five hundred twenty-three".