1121435221 has 8 divisors (see below), whose sum is σ = 1133870400. Its totient is φ = 1109036448.

The previous prime is 1121435207. The next prime is 1121435251. The reversal of 1121435221 is 1225341211.

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 1121435221 - 2⁷ = 1121435093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121435192 and 1121435201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121435201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55345 + ... + 72841.

It is an arithmetic number, because the mean of its divisors is an integer number (141733800).

Almost surely, 2^1121435221 is an apocalyptic number.

It is an amenable number.

1121435221 is a deficient number, since it is larger than the sum of its proper divisors (12435179).

1121435221 is a wasteful number, since it uses less digits than its factorization.

1121435221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18203.

The product of its digits is 480, while the sum is 22.

The square root of 1121435221 is about 33487.8369113324. The cubic root of 1121435221 is about 1038.9422248682.

Adding to 1121435221 its reverse (1225341211), we get a palindrome (2346776432).

The spelling of 1121435221 in words is "one billion, one hundred twenty-one million, four hundred thirty-five thousand, two hundred twenty-one".