1121223421 has 8 divisors (see below), whose sum is σ = 1181368800. Its totient is φ = 1061191440.

The previous prime is 1121223419. The next prime is 1121223431. The reversal of 1121223421 is 1243221211.

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 1121223421 - 2¹ = 1121223419 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121223401) 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, 7651 + ... + 47968.

It is an arithmetic number, because the mean of its divisors is an integer number (147671100).

Almost surely, 2^1121223421 is an apocalyptic number.

It is an amenable number.

1121223421 is a deficient number, since it is larger than the sum of its proper divisors (60145379).

1121223421 is a wasteful number, since it uses less digits than its factorization.

1121223421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56699.

The product of its digits is 192, while the sum is 19.

The square root of 1121223421 is about 33484.6744197999. The cubic root of 1121223421 is about 1038.8768141000.

Adding to 1121223421 its reverse (1243221211), we get a palindrome (2364444632).

The spelling of 1121223421 in words is "one billion, one hundred twenty-one million, two hundred twenty-three thousand, four hundred twenty-one".