21113001301444 has 36 divisors (see below), whose sum is σ = 41209264813444. Its totient is φ = 9408446183808.

The previous prime is 21113001301433. The next prime is 21113001301477. The reversal of 21113001301444 is 44410310031112.

It can be written as a sum of positive squares in 6 ways, for example, as 229124968900 + 20883876332544 = 478670^2 + 4569888^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241347027 + ... + 241434490.

Almost surely, 2^{21113001301444} is an apocalyptic number.

It is an amenable number.

21113001301444 is a deficient number, since it is larger than the sum of its proper divisors (20096263512000).

21113001301444 is a wasteful number, since it uses less digits than its factorization.

21113001301444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482781592 (or 482781561 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 21113001301444 its reverse (44410310031112), we get a palindrome (65523311332556).

The spelling of 21113001301444 in words is "twenty-one trillion, one hundred thirteen billion, one million, three hundred one thousand, four hundred forty-four".