21152431202 has 8 divisors (see below), whose sum is σ = 36261310656. Its totient is φ = 9065327652.

The previous prime is 21152431199. The next prime is 21152431213. The reversal of 21152431202 is 20213425112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755443958 + ... + 755443985.

It is an arithmetic number, because the mean of its divisors is an integer number (4532663832).

Almost surely, 2^21152431202 is an apocalyptic number.

21152431202 is a deficient number, since it is larger than the sum of its proper divisors (15108879454).

21152431202 is a wasteful number, since it uses less digits than its factorization.

21152431202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510887952.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 21152431202 its reverse (20213425112), we get a palindrome (41365856314).

The spelling of 21152431202 in words is "twenty-one billion, one hundred fifty-two million, four hundred thirty-one thousand, two hundred two".