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2122222001 = 29132755147
BaseRepresentation
bin111111001111110…
…1000100110110001
312110220100001021212
41332133220212301
513321242101001
6550330325505
7103406406104
oct17637504661
95426301255
102122222001
11999a36889
124b2889895
1327a89b783
14161bd273b
15c64a67bb
hex7e7e89b1

2122222001 has 8 divisors (see below), whose sum is σ = 2197096320. Its totient is φ = 2047460688.

The previous prime is 2122221989. The next prime is 2122222027. The reversal of 2122222001 is 1002222212.

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 2122222001 - 218 = 2121959857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122222051) 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, 10910 + ... + 66056.

It is an arithmetic number, because the mean of its divisors is an integer number (274637040).

Almost surely, 22122222001 is an apocalyptic number.

It is an amenable number.

2122222001 is a deficient number, since it is larger than the sum of its proper divisors (74874319).

2122222001 is a wasteful number, since it uses less digits than its factorization.

2122222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56503.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2122222001 is about 46067.5808025557. The cubic root of 2122222001 is about 1285.0803143390.

Adding to 2122222001 its reverse (1002222212), we get a palindrome (3124444213).

The spelling of 2122222001 in words is "two billion, one hundred twenty-two million, two hundred twenty-two thousand, one".

Divisors: 1 29 1327 38483 55147 1599263 73180069 2122222001