21101430214044 has 30 divisors (see below), whose sum is σ = 55163306764104. Its totient is φ = 7033810071240.

The previous prime is 21101430214013. The next prime is 21101430214049. The reversal of 21101430214044 is 44041203410112.

21101430214044 is a `hidden beast` number, since 2 + 1 + 10 + 1 + 430 + 214 + 0 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 21101430213999 and 21101430214017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101430214049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 32563935192 + ... + 32563935839.

Almost surely, 2^{21101430214044} is an apocalyptic number.

It is an amenable number.

21101430214044 is an abundant number, since it is smaller than the sum of its proper divisors (34061876550060).

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

21101430214044 is a wasteful number, since it uses less digits than its factorization.

21101430214044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65127871047 (or 65127871036 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 21101430214044 its reverse (44041203410112), we get a palindrome (65142633624156).

The spelling of 21101430214044 in words is "twenty-one trillion, one hundred one billion, four hundred thirty million, two hundred fourteen thousand, forty-four".