1224412220531 has 4 divisors (see below), whose sum is σ = 1288854969000. Its totient is φ = 1159969472064.

The previous prime is 1224412220513. The next prime is 1224412220627. The reversal of 1224412220531 is 1350222144221.

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

It is a cyclic number.

It is not a de Polignac number, because 1224412220531 - 2⁶ = 1224412220467 is a prime.

It is a super-2 number, since 2×1224412220531² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224412220494 and 1224412220503.

It is not an unprimeable number, because it can be changed into a prime (1224412220231) 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, 32221374206 + ... + 32221374243.

It is an arithmetic number, because the mean of its divisors is an integer number (322213742250).

Almost surely, 2^{1224412220531} is an apocalyptic number.

1224412220531 is a deficient number, since it is larger than the sum of its proper divisors (64442748469).

1224412220531 is an equidigital number, since it uses as much as digits as its factorization.

1224412220531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64442748468.

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

Adding to 1224412220531 its reverse (1350222144221), we get a palindrome (2574634364752).

The spelling of 1224412220531 in words is "one trillion, two hundred twenty-four billion, four hundred twelve million, two hundred twenty thousand, five hundred thirty-one".