21260202151 has 8 divisors (see below), whose sum is σ = 22211071200. Its totient is φ = 20323850400.

The previous prime is 21260202149. The next prime is 21260202179. The reversal of 21260202151 is 15120206212.

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

It is a cyclic number.

It is not a de Polignac number, because 21260202151 - 2¹ = 21260202149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21260202121) 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 7 ways as a sum of consecutive naturals, for example, 3626331 + ... + 3632188.

It is an arithmetic number, because the mean of its divisors is an integer number (2776383900).

Almost surely, 2^21260202151 is an apocalyptic number.

21260202151 is a deficient number, since it is larger than the sum of its proper divisors (950869049).

21260202151 is a wasteful number, since it uses less digits than its factorization.

21260202151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258649.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 21260202151 its reverse (15120206212), we get a palindrome (36380408363).

The spelling of 21260202151 in words is "twenty-one billion, two hundred sixty million, two hundred two thousand, one hundred fifty-one".