1123434330421 has 16 divisors (see below), whose sum is σ = 1214447896368. Its totient is φ = 1033079040000.

The previous prime is 1123434330413. The next prime is 1123434330463. The reversal of 1123434330421 is 1240334343211.

It can be written as a sum of positive squares in 8 ways, for example, as 127003140625 + 996431189796 = 356375^2 + 998214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123434330421 - 2³ = 1123434330413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123434330121) 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, 16246921 + ... + 16315921.

It is an arithmetic number, because the mean of its divisors is an integer number (75902993523).

Almost surely, 2^{1123434330421} is an apocalyptic number.

It is an amenable number.

1123434330421 is a deficient number, since it is larger than the sum of its proper divisors (91013565947).

1123434330421 is a wasteful number, since it uses less digits than its factorization.

1123434330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73752.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 1123434330421 its reverse (1240334343211), we get a palindrome (2363768673632).

The spelling of 1123434330421 in words is "one trillion, one hundred twenty-three billion, four hundred thirty-four million, three hundred thirty thousand, four hundred twenty-one".