1421231553441 has 20 divisors (see below), whose sum is σ = 2426370624832. Its totient is φ = 812132315928.

The previous prime is 1421231553431. The next prime is 1421231553449. The reversal of 1421231553441 is 1443551321241.

1421231553441 is a `hidden beast` number, since 1 + 42 + 1 + 23 + 1 + 553 + 4 + 41 = 666.

It is not a de Polignac number, because 1421231553441 - 2⁹ = 1421231552929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1421231553396 and 1421231553405.

It is not an unprimeable number, because it can be changed into a prime (1421231553449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1253290045 + ... + 1253291178.

Almost surely, 2^{1421231553441} is an apocalyptic number.

It is an amenable number.

1421231553441 is a deficient number, since it is larger than the sum of its proper divisors (1005139071391).

1421231553441 is an equidigital number, since it uses as much as digits as its factorization.

1421231553441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2506581242 (or 2506581233 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

Adding to 1421231553441 its reverse (1443551321241), we get a palindrome (2864782874682).

The spelling of 1421231553441 in words is "one trillion, four hundred twenty-one billion, two hundred thirty-one million, five hundred fifty-three thousand, four hundred forty-one".