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22102021099 = 78792805181
BaseRepresentation
bin10100100101011000…
…100001001111101011
32010001022212000010001
4110211120201033223
5330231104133344
614053055003431
71411465036204
oct244530411753
963038760101
1022102021099
119412018644
124349b09577
1321130226c2
1410d953a5ab
15895581ed4
hex5256213eb

22102021099 has 4 divisors (see below), whose sum is σ = 22104834160. Its totient is φ = 22099208040.

The previous prime is 22102021061. The next prime is 22102021121. The reversal of 22102021099 is 99012020122.

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 22102021099 - 215 = 22101988331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22102021399) 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, 1394712 + ... + 1410469.

It is an arithmetic number, because the mean of its divisors is an integer number (5526208540).

Almost surely, 222102021099 is an apocalyptic number.

22102021099 is a deficient number, since it is larger than the sum of its proper divisors (2813061).

22102021099 is an equidigital number, since it uses as much as digits as its factorization.

22102021099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2813060.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 22102021099 in words is "twenty-two billion, one hundred two million, twenty-one thousand, ninety-nine".

Divisors: 1 7879 2805181 22102021099