9872213351 has 64 divisors (see below), whose sum is σ = 13640073216. Its totient is φ = 6896534400.

The previous prime is 9872213347. The next prime is 9872213353. The reversal of 9872213351 is 1533122789.

It is not a de Polignac number, because 9872213351 - 2² = 9872213347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 9872213299 and 9872213308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9872213353) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9081530 + ... + 9082616.

It is an arithmetic number, because the mean of its divisors is an integer number (213126144).

Almost surely, 2^9872213351 is an apocalyptic number.

9872213351 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

9872213351 is a deficient number, since it is larger than the sum of its proper divisors (3767859865).

9872213351 is a wasteful number, since it uses less digits than its factorization.

9872213351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1372.

The product of its digits is 90720, while the sum is 41.

The square root of 9872213351 is about 99359.0124296734. The cubic root of 9872213351 is about 2145.2183875031.

The spelling of 9872213351 in words is "nine billion, eight hundred seventy-two million, two hundred thirteen thousand, three hundred fifty-one".