1212343455 has 32 divisors (see below), whose sum is σ = 2027658240. Its totient is φ = 617379840.

The previous prime is 1212343421. The next prime is 1212343459. The reversal of 1212343455 is 5543432121.

It is not a de Polignac number, because 1212343455 - 2²⁰ = 1211294879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212343459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214911 + ... + 220479.

It is an arithmetic number, because the mean of its divisors is an integer number (63364320).

Almost surely, 2^1212343455 is an apocalyptic number.

1212343455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1212343455 is a deficient number, since it is larger than the sum of its proper divisors (815314785).

1212343455 is a wasteful number, since it uses less digits than its factorization.

1212343455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231.

The product of its digits is 14400, while the sum is 30.

The square root of 1212343455 is about 34818.7227652021. The cubic root of 1212343455 is about 1066.2897245038.

Adding to 1212343455 its reverse (5543432121), we get a palindrome (6755775576).

The spelling of 1212343455 in words is "one billion, two hundred twelve million, three hundred forty-three thousand, four hundred fifty-five".