9811220534 has 8 divisors (see below), whose sum is σ = 14719522608. Its totient is φ = 4904713000.

The previous prime is 9811220533. The next prime is 9811220539. The reversal of 9811220534 is 4350221189.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 9811220494 and 9811220503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9811220533) 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, 434882 + ... + 456885.

It is an arithmetic number, because the mean of its divisors is an integer number (1839940326).

Almost surely, 2^9811220534 is an apocalyptic number.

9811220534 is a deficient number, since it is larger than the sum of its proper divisors (4908302074).

9811220534 is a wasteful number, since it uses less digits than its factorization.

9811220534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897270.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 9811220534 is about 99051.6054084940. The cubic root of 9811220534 is about 2140.7913728160.

The spelling of 9811220534 in words is "nine billion, eight hundred eleven million, two hundred twenty thousand, five hundred thirty-four".