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2122220984 = 2313191310667
BaseRepresentation
bin111111001111110…
…1000010110111000
312110220022222220012
41332133220112320
513321242032414
6550330321052
7103406403122
oct17637502670
95426288805
102122220984
11999a36044
124b2889188
1327a89b180
14161bd2212
15c64a633e
hex7e7e85b8

2122220984 has 32 divisors (see below), whose sum is σ = 4287895920. Its totient is φ = 978882816.

The previous prime is 2122220983. The next prime is 2122221019. The reversal of 2122220984 is 4890222212.

It is a self number, because there is not a number n which added to its sum of digits gives 2122220984.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2122220981) 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, 193619 + ... + 204285.

Almost surely, 22122220984 is an apocalyptic number.

It is an amenable number.

2122220984 is an abundant number, since it is smaller than the sum of its proper divisors (2165674936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2122220984 is a wasteful number, since it uses less digits than its factorization.

2122220984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12599 (or 12595 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 2122220984 is about 46067.5697644232. The cubic root of 2122220984 is about 1285.0801090625.

The spelling of 2122220984 in words is "two billion, one hundred twenty-two million, two hundred twenty thousand, nine hundred eighty-four".