1223551412 has 24 divisors (see below), whose sum is σ = 2266572000. Its totient is φ = 576940896.

The previous prime is 1223551411. The next prime is 1223551429. The reversal of 1223551412 is 2141553221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223551411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117662 + ... + 127637.

It is an arithmetic number, because the mean of its divisors is an integer number (94440500).

Almost surely, 2^1223551412 is an apocalyptic number.

It is an amenable number.

1223551412 is a deficient number, since it is larger than the sum of its proper divisors (1043020588).

1223551412 is a wasteful number, since it uses less digits than its factorization.

1223551412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245375 (or 245373 counting only the distinct ones).

The product of its digits is 2400, while the sum is 26.

The square root of 1223551412 is about 34979.2997642892. The cubic root of 1223551412 is about 1069.5655533858.

The spelling of 1223551412 in words is "one billion, two hundred twenty-three million, five hundred fifty-one thousand, four hundred twelve".