9100055021 has 8 divisors (see below), whose sum is σ = 9350261760. Its totient is φ = 8850072528.

The previous prime is 9100054993. The next prime is 9100055023. The reversal of 9100055021 is 1205500019.

9100055021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 9100055021 - 2¹⁰ = 9100053997 is a prime.

It is a super-2 number, since 2×9100055021² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9100055023) 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, 27920 + ... + 137766.

It is an arithmetic number, because the mean of its divisors is an integer number (1168782720).

Almost surely, 2^9100055021 is an apocalyptic number.

It is an amenable number.

9100055021 is a deficient number, since it is larger than the sum of its proper divisors (250206739).

9100055021 is a wasteful number, since it uses less digits than its factorization.

9100055021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112123.

The product of its (nonzero) digits is 450, while the sum is 23.

The square root of 9100055021 is about 95394.2085296587. The cubic root of 9100055021 is about 2087.7636863698.

The spelling of 9100055021 in words is "nine billion, one hundred million, fifty-five thousand, twenty-one".