1231214213224 has 8 divisors (see below), whose sum is σ = 2308526649810. Its totient is φ = 615607106608.

The previous prime is 1231214213219. The next prime is 1231214213249. The reversal of 1231214213224 is 4223124121321.

It can be written as a sum of positive squares in only one way, i.e., 743337108900 + 487877104324 = 862170^2 + 698482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1231214213192 and 1231214213201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76950888319 + ... + 76950888334.

Almost surely, 2^{1231214213224} is an apocalyptic number.

It is an amenable number.

1231214213224 is a deficient number, since it is larger than the sum of its proper divisors (1077312436586).

1231214213224 is a wasteful number, since it uses less digits than its factorization.

1231214213224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153901776659 (or 153901776655 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

Adding to 1231214213224 its reverse (4223124121321), we get a palindrome (5454338334545).

The spelling of 1231214213224 in words is "one trillion, two hundred thirty-one billion, two hundred fourteen million, two hundred thirteen thousand, two hundred twenty-four".