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12222022180 = 2253119712939
BaseRepresentation
bin10110110000111110…
…10100001000100100
31011112202220001112011
423120133110020210
5200012314202210
65340440204004
7611605321504
oct133037241044
934482801464
1012222022180
115202016185
122451169604
1311ca15c7b4
1483d2d3a04
154b7ec9d8a
hex2d87d4224

12222022180 has 24 divisors (see below), whose sum is σ = 26494191360. Its totient is φ = 4731105120.

The previous prime is 12222022097. The next prime is 12222022181. The reversal of 12222022180 is 8122022221.

It is not an unprimeable number, because it can be changed into a prime (12222022181) 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, 9855850 + ... + 9857089.

It is an arithmetic number, because the mean of its divisors is an integer number (1103924640).

Almost surely, 212222022180 is an apocalyptic number.

12222022180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12222022180 is an abundant number, since it is smaller than the sum of its proper divisors (14272169180).

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

12222022180 is a wasteful number, since it uses less digits than its factorization.

12222022180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19712979 (or 19712977 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

It can be divided in two parts, 122220 and 22180, that added together give a square (144400 = 3802).

The spelling of 12222022180 in words is "twelve billion, two hundred twenty-two million, twenty-two thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 31 62 124 155 310 620 19712939 39425878 78851756 98564695 197129390 394258780 611101109 1222202218 2444404436 3055505545 6111011090 12222022180