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2122415105 = 51429297049
BaseRepresentation
bin111111010000001…
…0111110000000001
312110220200212011212
41332200113300001
513321314240410
6550334415505
7103411142066
oct17640276001
95426625155
102122415105
1199a058978
124b2961595
1327a938635
14161c42c6d
15c64e3b05
hex7e817c01

2122415105 has 8 divisors (see below), whose sum is σ = 2548689000. Its totient is φ = 1696738176.

The previous prime is 2122415101. The next prime is 2122415147. The reversal of 2122415105 is 5015142212.

It can be written as a sum of positive squares in 4 ways, for example, as 12666481 + 2109748624 = 3559^2 + 45932^2 .

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 2122415105 - 22 = 2122415101 is a prime.

It is a super-2 number, since 2×21224151052 = 9009291755864322050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2122415101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141380 + ... + 155669.

It is an arithmetic number, because the mean of its divisors is an integer number (318586125).

Almost surely, 22122415105 is an apocalyptic number.

It is an amenable number.

2122415105 is a deficient number, since it is larger than the sum of its proper divisors (426273895).

2122415105 is a wasteful number, since it uses less digits than its factorization.

2122415105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298483.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 2122415105 is about 46069.6766322491. The cubic root of 2122415105 is about 1285.1192902524.

Adding to 2122415105 its reverse (5015142212), we get a palindrome (7137557317).

The spelling of 2122415105 in words is "two billion, one hundred twenty-two million, four hundred fifteen thousand, one hundred five".

Divisors: 1 5 1429 7145 297049 1485245 424483021 2122415105