Search a number
-
+
100022021 = 119092911
BaseRepresentation
bin1011111011000…
…11011100000101
320222012122102022
411331203130011
5201101201041
613531452525
72323113251
oct575433405
9228178368
10100022021
1151507030
12295b7145
1317950838
14d3d9261
158bab24b
hex5f63705

100022021 has 4 divisors (see below), whose sum is σ = 109114944. Its totient is φ = 90929100.

The previous prime is 100022003. The next prime is 100022029. The reversal of 100022021 is 120220001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120220001 = 1110929091.

It is a cyclic number.

It is not a de Polignac number, because 100022021 - 214 = 100005637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100022029) 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, 4546445 + ... + 4546466.

It is an arithmetic number, because the mean of its divisors is an integer number (27278736).

Almost surely, 2100022021 is an apocalyptic number.

100022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

100022021 is a deficient number, since it is larger than the sum of its proper divisors (9092923).

100022021 is an equidigital number, since it uses as much as digits as its factorization.

100022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9092922.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 100022021 is about 10001.1009893911. The cubic root of 100022021 is about 464.1929516699.

Adding to 100022021 its reverse (120220001), we get a palindrome (220242022).

The spelling of 100022021 in words is "one hundred million, twenty-two thousand, twenty-one".

Divisors: 1 11 9092911 100022021