1223012144 has 10 divisors (see below), whose sum is σ = 2369586060. Its totient is φ = 611506064.

The previous prime is 1223012137. The next prime is 1223012173. The reversal of 1223012144 is 4412103221.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38219114 + ... + 38219145.

It is an arithmetic number, because the mean of its divisors is an integer number (236958606).

Almost surely, 2^1223012144 is an apocalyptic number.

It is an amenable number.

1223012144 is a deficient number, since it is larger than the sum of its proper divisors (1146573916).

1223012144 is an equidigital number, since it uses as much as digits as its factorization.

1223012144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76438267 (or 76438261 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1223012144 is about 34971.5905271693. The cubic root of 1223012144 is about 1069.4083968689.

Adding to 1223012144 its reverse (4412103221), we get a palindrome (5635115365).

The spelling of 1223012144 in words is "one billion, two hundred twenty-three million, twelve thousand, one hundred forty-four".