1223231450511 has 8 divisors (see below), whose sum is σ = 1863971734144. Its totient is φ = 698989400280.

The previous prime is 1223231450473. The next prime is 1223231450527. The reversal of 1223231450511 is 1150541323221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1223231450511 - 2¹⁰ = 1223231449487 is a prime.

It is a super-2 number, since 2×1223231450511² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223231450011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29124558325 + ... + 29124558366.

It is an arithmetic number, because the mean of its divisors is an integer number (232996466768).

Almost surely, 2^{1223231450511} is an apocalyptic number.

1223231450511 is a deficient number, since it is larger than the sum of its proper divisors (640740283633).

1223231450511 is an equidigital number, since it uses as much as digits as its factorization.

1223231450511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58249116701.

The product of its (nonzero) digits is 7200, while the sum is 30.

Adding to 1223231450511 its reverse (1150541323221), we get a palindrome (2373772773732).

The spelling of 1223231450511 in words is "one trillion, two hundred twenty-three billion, two hundred thirty-one million, four hundred fifty thousand, five hundred eleven".