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2122221001 = 38320532699
BaseRepresentation
bin111111001111110…
…1000010111001001
312110220022222220211
41332133220113021
513321242033001
6550330321121
7103406403145
oct17637502711
95426288824
102122221001
11999a3605a
124b28891a1
1327a89b194
14161bd2225
15c64a6351
hex7e7e85c9

2122221001 has 8 divisors (see below), whose sum is σ = 2129587200. Its totient is φ = 2114865072.

The previous prime is 2122220983. The next prime is 2122221019. The reversal of 2122221001 is 1001222212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2122220983) and next prime (2122221019).

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 2122221001 - 229 = 1585350089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122221301) 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 7 ways as a sum of consecutive naturals, for example, 784950 + ... + 787648.

It is an arithmetic number, because the mean of its divisors is an integer number (266198400).

Almost surely, 22122221001 is an apocalyptic number.

It is an amenable number.

2122221001 is a deficient number, since it is larger than the sum of its proper divisors (7366199).

2122221001 is a wasteful number, since it uses less digits than its factorization.

2122221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5135.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2122221001 is about 46067.5699489348. The cubic root of 2122221001 is about 1285.0801124939.

Adding to 2122221001 its reverse (1001222212), we get a palindrome (3123443213).

The spelling of 2122221001 in words is "two billion, one hundred twenty-two million, two hundred twenty-one thousand, one".