21234201433140 has 96 divisors (see below), whose sum is σ = 61396607986560. Its totient is φ = 5480027675136.

The previous prime is 21234201433117. The next prime is 21234201433153. The reversal of 21234201433140 is 4133410243212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 21234201433098 and 21234201433107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37472499 + ... + 38034938.

It is an arithmetic number, because the mean of its divisors is an integer number (639547999860).

Almost surely, 2^{21234201433140} is an apocalyptic number.

21234201433140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21234201433140 is an abundant number, since it is smaller than the sum of its proper divisors (40162406553420).

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

21234201433140 is a wasteful number, since it uses less digits than its factorization.

21234201433140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75507601 (or 75507599 counting only the distinct ones).

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

Adding to 21234201433140 its reverse (4133410243212), we get a palindrome (25367611676352).

The spelling of 21234201433140 in words is "twenty-one trillion, two hundred thirty-four billion, two hundred one million, four hundred thirty-three thousand, one hundred forty".