21130331535151 has 4 divisors (see below), whose sum is σ = 21621734594152. Its totient is φ = 20638928476152.

The previous prime is 21130331535091. The next prime is 21130331535211. The reversal of 21130331535151 is 15153513303112.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (21130331535091) and next prime (21130331535211).

It is a cyclic number.

It is not a de Polignac number, because 21130331535151 - 2⁷ = 21130331535023 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 (21130331535251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245701529436 + ... + 245701529521.

It is an arithmetic number, because the mean of its divisors is an integer number (5405433648538).

Almost surely, 2^{21130331535151} is an apocalyptic number.

21130331535151 is a deficient number, since it is larger than the sum of its proper divisors (491403059001).

21130331535151 is an equidigital number, since it uses as much as digits as its factorization.

21130331535151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491403059000.

The product of its (nonzero) digits is 20250, while the sum is 34.

Adding to 21130331535151 its reverse (15153513303112), we get a palindrome (36283844838263).

The spelling of 21130331535151 in words is "twenty-one trillion, one hundred thirty billion, three hundred thirty-one million, five hundred thirty-five thousand, one hundred fifty-one".