1123410021 has 16 divisors (see below), whose sum is σ = 1539430464. Its totient is φ = 728193024.

The previous prime is 1123409993. The next prime is 1123410049. The reversal of 1123410021 is 1200143211.

It is an interprime number because it is at equal distance from previous prime (1123409993) and next prime (1123410049).

It is not a de Polignac number, because 1123410021 - 2⁶ = 1123409957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123417021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222501 + ... + 227493.

It is an arithmetic number, because the mean of its divisors is an integer number (96214404).

Almost surely, 2^1123410021 is an apocalyptic number.

It is an amenable number.

1123410021 is a deficient number, since it is larger than the sum of its proper divisors (416020443).

1123410021 is a wasteful number, since it uses less digits than its factorization.

1123410021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7060.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1123410021 is about 33517.3092744629. The cubic root of 1123410021 is about 1039.5517116887.

Adding to 1123410021 its reverse (1200143211), we get a palindrome (2323553232).

The spelling of 1123410021 in words is "one billion, one hundred twenty-three million, four hundred ten thousand, twenty-one".