1421331131224 has 8 divisors (see below), whose sum is σ = 2664995871060. Its totient is φ = 710665565608.

The previous prime is 1421331131221. The next prime is 1421331131239. The reversal of 1421331131224 is 4221311331241.

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 = 1421331131192 and 1421331131201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421331131221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 88833195694 + ... + 88833195709.

Almost surely, 2^{1421331131224} is an apocalyptic number.

It is an amenable number.

1421331131224 is a deficient number, since it is larger than the sum of its proper divisors (1243664739836).

1421331131224 is a wasteful number, since it uses less digits than its factorization.

1421331131224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177666391409 (or 177666391405 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

Adding to 1421331131224 its reverse (4221311331241), we get a palindrome (5642642462465).

The spelling of 1421331131224 in words is "one trillion, four hundred twenty-one billion, three hundred thirty-one million, one hundred thirty-one thousand, two hundred twenty-four".