1121000421 has 8 divisors (see below), whose sum is σ = 1496191680. Its totient is φ = 746571392.

The previous prime is 1121000401. The next prime is 1121000449. The reversal of 1121000421 is 1240001211.

It is a happy number.

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 1121000421 - 2²³ = 1112611813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121000397 and 1121000406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121000401) 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, 187116 + ... + 193013.

It is an arithmetic number, because the mean of its divisors is an integer number (187023960).

Almost surely, 2^1121000421 is an apocalyptic number.

It is an amenable number.

1121000421 is a deficient number, since it is larger than the sum of its proper divisors (375191259).

1121000421 is an equidigital number, since it uses as much as digits as its factorization.

1121000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381115.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1121000421 is about 33481.3443726503. The cubic root of 1121000421 is about 1038.8079355025.

Adding to 1121000421 its reverse (1240001211), we get a palindrome (2361001632).

The spelling of 1121000421 in words is "one billion, one hundred twenty-one million, four hundred twenty-one", and thus it is an aban number.