21444233034 has 64 divisors (see below), whose sum is σ = 52394065920. Its totient is φ = 5717585280.

The previous prime is 21444233033. The next prime is 21444233053. The reversal of 21444233034 is 43033244412.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21444232992 and 21444233010.

It is not an unprimeable number, because it can be changed into a prime (21444233033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231114 + ... + 310325.

It is an arithmetic number, because the mean of its divisors is an integer number (818657280).

Almost surely, 2^21444233034 is an apocalyptic number.

21444233034 is an abundant number, since it is smaller than the sum of its proper divisors (30949832886).

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

21444233034 is a wasteful number, since it uses less digits than its factorization.

21444233034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541515.

The product of its (nonzero) digits is 27648, while the sum is 30.

Adding to 21444233034 its reverse (43033244412), we get a palindrome (64477477446).

The spelling of 21444233034 in words is "twenty-one billion, four hundred forty-four million, two hundred thirty-three thousand, thirty-four".