1000051212171 has 24 divisors (see below), whose sum is σ = 1465695673792. Its totient is φ = 606068535600.

The previous prime is 1000051212131. The next prime is 1000051212227. The reversal of 1000051212171 is 1712121500001.

It is not a de Polignac number, because 1000051212171 - 2²¹ = 1000049115019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000051212101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18379476 + ... + 18433806.

Almost surely, 2^{1000051212171} is an apocalyptic number.

1000051212171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1000051212171 is a deficient number, since it is larger than the sum of its proper divisors (465644461621).

1000051212171 is a wasteful number, since it uses less digits than its factorization.

1000051212171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105063 (or 105052 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 21.

Adding to 1000051212171 its reverse (1712121500001), we get a palindrome (2712172712172).

The spelling of 1000051212171 in words is "one trillion, fifty-one million, two hundred twelve thousand, one hundred seventy-one".