1051172213 has 8 divisors (see below), whose sum is σ = 1293750528. Its totient is φ = 831696624.

The previous prime is 1051172209. The next prime is 1051172231. The reversal of 1051172213 is 3122711501.

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 1051172213 - 2² = 1051172209 is a prime.

It is a super-2 number, since 2×1051172213² = 2209926042766634738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051172263) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5775581 + ... + 5775762.

It is an arithmetic number, because the mean of its divisors is an integer number (161718816).

Almost surely, 2^1051172213 is an apocalyptic number.

1051172213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1051172213 is a deficient number, since it is larger than the sum of its proper divisors (242578315).

1051172213 is a wasteful number, since it uses less digits than its factorization.

1051172213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11551363.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1051172213 is about 32421.7860859022. The cubic root of 1051172213 is about 1016.7744488555.

Adding to 1051172213 its reverse (3122711501), we get a palindrome (4173883714).

The spelling of 1051172213 in words is "one billion, fifty-one million, one hundred seventy-two thousand, two hundred thirteen".