10021181451 has 4 divisors (see below), whose sum is σ = 13361575272. Its totient is φ = 6680787632.

The previous prime is 10021181413. The next prime is 10021181479. The reversal of 10021181451 is 15418112001.

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

It is a cyclic number.

It is not a de Polignac number, because 10021181451 - 2¹³ = 10021173259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10021188451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670196906 + ... + 1670196911.

It is an arithmetic number, because the mean of its divisors is an integer number (3340393818).

Almost surely, 2^10021181451 is an apocalyptic number.

10021181451 is a deficient number, since it is larger than the sum of its proper divisors (3340393821).

10021181451 is an equidigital number, since it uses as much as digits as its factorization.

10021181451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3340393820.

The product of its (nonzero) digits is 320, while the sum is 24.

Adding to 10021181451 its reverse (15418112001), we get a palindrome (25439293452).

The spelling of 10021181451 in words is "ten billion, twenty-one million, one hundred eighty-one thousand, four hundred fifty-one".