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2111122030 = 25474491749
BaseRepresentation
bin111110111010101…
…0010101001101110
312110010110002222211
41331311102221232
513310421401110
6545252401034
7103213145503
oct17565225156
95403402884
102111122030
11993745256
124ab01617a
132784b3344
141605434aa
15c551298a
hex7dd52a6e

2111122030 has 16 divisors (see below), whose sum is σ = 3880872000. Its totient is φ = 826481632.

The previous prime is 2111122003. The next prime is 2111122031. The reversal of 2111122030 is 302211112.

It is a self number, because there is not a number n which added to its sum of digits gives 2111122030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111122031) 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, 2245405 + ... + 2246344.

It is an arithmetic number, because the mean of its divisors is an integer number (242554500).

Almost surely, 22111122030 is an apocalyptic number.

2111122030 is a deficient number, since it is larger than the sum of its proper divisors (1769749970).

2111122030 is a wasteful number, since it uses less digits than its factorization.

2111122030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491803.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2111122030 is about 45946.9479943989. The cubic root of 2111122030 is about 1282.8359220721.

Adding to 2111122030 its reverse (302211112), we get a palindrome (2413333142).

The spelling of 2111122030 in words is "two billion, one hundred eleven million, one hundred twenty-two thousand, thirty".

Divisors: 1 2 5 10 47 94 235 470 4491749 8983498 22458745 44917490 211112203 422224406 1055561015 2111122030