21113132104442 has 32 divisors (see below), whose sum is σ = 36386375178240. Its totient is φ = 9000384232320.

The previous prime is 21113132104403. The next prime is 21113132104511. The reversal of 21113132104442 is 24440123131112.

It is a super-2 number, since 2×21113132104442² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33478934 + ... + 34103742.

It is an arithmetic number, because the mean of its divisors is an integer number (1137074224320).

Almost surely, 2^{21113132104442} is an apocalyptic number.

21113132104442 is a deficient number, since it is larger than the sum of its proper divisors (15273243073798).

21113132104442 is a wasteful number, since it uses less digits than its factorization.

21113132104442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637646.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 21113132104442 its reverse (24440123131112), we get a palindrome (45553255235554).

The spelling of 21113132104442 in words is "twenty-one trillion, one hundred thirteen billion, one hundred thirty-two million, one hundred four thousand, four hundred forty-two".