21403443214110 has 256 divisors, whose sum is σ = 54972830711808. Its totient is φ = 5321707776000.

The previous prime is 21403443214091. The next prime is 21403443214129. The reversal of 21403443214110 is 1141234430412.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21403443214091) and next prime (21403443214129).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2354350665 + ... + 2354359755.

It is an arithmetic number, because the mean of its divisors is an integer number (214737619968).

Almost surely, 2^{21403443214110} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21403443214110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27486415355904).

21403443214110 is an abundant number, since it is smaller than the sum of its proper divisors (33569387497698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21403443214110 is a wasteful number, since it uses less digits than its factorization.

21403443214110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9719.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 21403443214110 its reverse (1141234430412), we get a palindrome (22544677644522).

The spelling of 21403443214110 in words is "twenty-one trillion, four hundred three billion, four hundred forty-three million, two hundred fourteen thousand, one hundred ten".