1400331320421 has 16 divisors (see below), whose sum is σ = 2156660002368. Its totient is φ = 798762963200.

The previous prime is 1400331320393. The next prime is 1400331320447. The reversal of 1400331320421 is 1240231330041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1400331320421 - 2⁵ = 1400331320389 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1400331320391 and 1400331320400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400331320621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1248066570 + ... + 1248067691.

It is an arithmetic number, because the mean of its divisors is an integer number (134791250148).

Almost surely, 2^{1400331320421} is an apocalyptic number.

1400331320421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1400331320421 is a deficient number, since it is larger than the sum of its proper divisors (756328681947).

1400331320421 is a wasteful number, since it uses less digits than its factorization.

1400331320421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2496134292.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 1400331320421 its reverse (1240231330041), we get a palindrome (2640562650462).

The spelling of 1400331320421 in words is "one trillion, four hundred billion, three hundred thirty-one million, three hundred twenty thousand, four hundred twenty-one".