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22010009009 = 39115627719
BaseRepresentation
bin10100011111111001…
…100001010110110001
32002210220201022020212
4110133321201112301
5330034030242014
614040010513505
71406266663322
oct243771412661
962726638225
1022010009009
11937509259a
124323135895
1320c9c47991
1410cb228449
1588c45923e
hex51fe615b1

22010009009 has 4 divisors (see below), whose sum is σ = 22015640640. Its totient is φ = 22004377380.

The previous prime is 22010008997. The next prime is 22010009023. The reversal of 22010009009 is 90090001022.

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.

It is a cyclic number.

It is not a de Polignac number, because 22010009009 - 232 = 17715041713 is a prime.

It is a super-2 number, since 2×220100090092 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22010009039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2809949 + ... + 2817770.

It is an arithmetic number, because the mean of its divisors is an integer number (5503910160).

Almost surely, 222010009009 is an apocalyptic number.

It is an amenable number.

22010009009 is a deficient number, since it is larger than the sum of its proper divisors (5631631).

22010009009 is an equidigital number, since it uses as much as digits as its factorization.

22010009009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5631630.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 22010009009 in words is "twenty-two billion, ten million, nine thousand, nine".

Divisors: 1 3911 5627719 22010009009