921255011 has 4 divisors (see below), whose sum is σ = 928287624. Its totient is φ = 914222400.

The previous prime is 921254989. The next prime is 921255017. The reversal of 921255011 is 110552129.

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 921255011 - 2⁶ = 921254947 is a prime.

It is a super-2 number, since 2×921255011² = 1697421590585220242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (921255017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3516110 + ... + 3516371.

It is an arithmetic number, because the mean of its divisors is an integer number (232071906).

Almost surely, 2^921255011 is an apocalyptic number.

921255011 is a deficient number, since it is larger than the sum of its proper divisors (7032613).

921255011 is a wasteful number, since it uses less digits than its factorization.

921255011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7032612.

The product of its (nonzero) digits is 900, while the sum is 26.

The square root of 921255011 is about 30352.1829692693. The cubic root of 921255011 is about 973.0308751562.

The spelling of 921255011 in words is "nine hundred twenty-one million, two hundred fifty-five thousand, eleven".