10421433431321 has 32 divisors (see below), whose sum is σ = 11548737285120. Its totient is φ = 9325242712000.

The previous prime is 10421433431251. The next prime is 10421433431341. The reversal of 10421433431321 is 12313433412401.

It is not a de Polignac number, because 10421433431321 - 2¹⁸ = 10421433169177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10421433431341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1352901956 + ... + 1352909658.

It is an arithmetic number, because the mean of its divisors is an integer number (360898040160).

Almost surely, 2^{10421433431321} is an apocalyptic number.

10421433431321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10421433431321 is a deficient number, since it is larger than the sum of its proper divisors (1127303853799).

10421433431321 is a wasteful number, since it uses less digits than its factorization.

10421433431321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14797.

The product of its (nonzero) digits is 20736, while the sum is 32.

Adding to 10421433431321 its reverse (12313433412401), we get a palindrome (22734866843722).

The spelling of 10421433431321 in words is "ten trillion, four hundred twenty-one billion, four hundred thirty-three million, four hundred thirty-one thousand, three hundred twenty-one".