21403022100043 has 8 divisors (see below), whose sum is σ = 21936847167488. Its totient is φ = 20870837049384.

The previous prime is 21403022100023. The next prime is 21403022100073. The reversal of 21403022100043 is 34000122030412.

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

It is a cyclic number.

It is not a de Polignac number, because 21403022100043 - 2¹³ = 21403022091851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21403022099987 and 21403022100023.

It is not an unprimeable number, because it can be changed into a prime (21403022100013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 409977771 + ... + 410029972.

It is an arithmetic number, because the mean of its divisors is an integer number (2742105895936).

Almost surely, 2^{21403022100043} is an apocalyptic number.

21403022100043 is a deficient number, since it is larger than the sum of its proper divisors (533825067445).

21403022100043 is an equidigital number, since it uses as much as digits as its factorization.

21403022100043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820008393.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21403022100043 its reverse (34000122030412), we get a palindrome (55403144130455).

The spelling of 21403022100043 in words is "twenty-one trillion, four hundred three billion, twenty-two million, one hundred thousand, forty-three".