1121533401 has 8 divisors (see below), whose sum is σ = 1583341344. Its totient is φ = 703707200.

The previous prime is 1121533379. The next prime is 1121533403. The reversal of 1121533401 is 1043351211.

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

It is a cyclic number.

It is not a de Polignac number, because 1121533401 - 2⁹ = 1121532889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121533403) 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, 10995375 + ... + 10995476.

It is an arithmetic number, because the mean of its divisors is an integer number (197917668).

Almost surely, 2^1121533401 is an apocalyptic number.

It is an amenable number.

1121533401 is a deficient number, since it is larger than the sum of its proper divisors (461807943).

1121533401 is a wasteful number, since it uses less digits than its factorization.

1121533401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21990871.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1121533401 is about 33489.3027846206. The cubic root of 1121533401 is about 1038.9725432700.

Adding to 1121533401 its reverse (1043351211), we get a palindrome (2164884612).

The spelling of 1121533401 in words is "one billion, one hundred twenty-one million, five hundred thirty-three thousand, four hundred one".