21113430034044 has 24 divisors (see below), whose sum is σ = 49381688309968. Its totient is φ = 7021093121280.

The previous prime is 21113430034043. The next prime is 21113430034069. The reversal of 21113430034044 is 44043003431112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21113430034043) 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, 2089605997 + ... + 2089616100.

Almost surely, 2^{21113430034044} is an apocalyptic number.

It is an amenable number.

21113430034044 is an abundant number, since it is smaller than the sum of its proper divisors (28268258275924).

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

21113430034044 is a wasteful number, since it uses less digits than its factorization.

21113430034044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179222525 (or 4179222523 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 21113430034044 its reverse (44043003431112), we get a palindrome (65156433465156).

The spelling of 21113430034044 in words is "twenty-one trillion, one hundred thirteen billion, four hundred thirty million, thirty-four thousand, forty-four".