1252423224011 has 4 divisors (see below), whose sum is σ = 1252435956912. Its totient is φ = 1252410491112.

The previous prime is 1252423223981. The next prime is 1252423224131. The reversal of 1252423224011 is 1104223242521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1252423224011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1252423244011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6217751 + ... + 6416016.

It is an arithmetic number, because the mean of its divisors is an integer number (313108989228).

Almost surely, 2^{1252423224011} is an apocalyptic number.

1252423224011 is a deficient number, since it is larger than the sum of its proper divisors (12732901).

1252423224011 is an equidigital number, since it uses as much as digits as its factorization.

1252423224011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12732900.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 1252423224011 its reverse (1104223242521), we get a palindrome (2356646466532).

The spelling of 1252423224011 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-three million, two hundred twenty-four thousand, eleven".