21404226352034 has 8 divisors (see below), whose sum is σ = 32192415506460. Its totient is φ = 10673421183216.

The previous prime is 21404226352031. The next prime is 21404226352037. The reversal of 21404226352034 is 43025362240412.

It is an interprime number because it is at equal distance from previous prime (21404226352031) and next prime (21404226352037).

It can be written as a sum of positive squares in 2 ways, for example, as 20899846573225 + 504379778809 = 4571635^2 + 710197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21404226352031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14345995469 + ... + 14345996960.

Almost surely, 2^{21404226352034} is an apocalyptic number.

21404226352034 is a deficient number, since it is larger than the sum of its proper divisors (10788189154426).

21404226352034 is a wasteful number, since it uses less digits than its factorization.

21404226352034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28691992804.

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 21404226352034 its reverse (43025362240412), we get a palindrome (64429588592446).

The spelling of 21404226352034 in words is "twenty-one trillion, four hundred four billion, two hundred twenty-six million, three hundred fifty-two thousand, thirty-four".