1232121234 has 32 divisors (see below), whose sum is σ = 2614394880. Its totient is φ = 386022672.

The previous prime is 1232121227. The next prime is 1232121239. The reversal of 1232121234 is 4321212321.

1232121234 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 1232121234.

It is not an unprimeable number, because it can be changed into a prime (1232121239) 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, 28074 + ... + 57029.

It is an arithmetic number, because the mean of its divisors is an integer number (81699840).

Almost surely, 2^1232121234 is an apocalyptic number.

1232121234 is an abundant number, since it is smaller than the sum of its proper divisors (1382273646).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1232121234 is a wasteful number, since it uses less digits than its factorization.

1232121234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85254.

The product of its digits is 576, while the sum is 21.

The square root of 1232121234 is about 35101.5844941507. The cubic root of 1232121234 is about 1072.0568448591.

Adding to 1232121234 its reverse (4321212321), we get a palindrome (5553333555).

The spelling of 1232121234 in words is "one billion, two hundred thirty-two million, one hundred twenty-one thousand, two hundred thirty-four".