21401400414403 has 2 divisors, whose sum is σ = 21401400414404. Its totient is φ = 21401400414402.

The previous prime is 21401400414371. The next prime is 21401400414467. The reversal of 21401400414403 is 30441400410412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21401400414403 - 2⁵ = 21401400414371 is a prime.

It is not a weakly prime, because it can be changed into another prime (21401400414103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10700700207201 + 10700700207202.

It is an arithmetic number, because the mean of its divisors is an integer number (10700700207202).

Almost surely, 2^{21401400414403} is an apocalyptic number.

21401400414403 is a deficient number, since it is larger than the sum of its proper divisors (1).

21401400414403 is an equidigital number, since it uses as much as digits as its factorization.

21401400414403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21401400414403 its reverse (30441400410412), we get a palindrome (51842800824815).

The spelling of 21401400414403 in words is "twenty-one trillion, four hundred one billion, four hundred million, four hundred fourteen thousand, four hundred three".