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12221112233120 = 255749950942961
BaseRepresentation
bin1011000111010111001100…
…0011011010110010100000
31121021022211022202100112212
42301311303003122302200
53100212314212424440
641554145040341252
72400642360666410
oct261656303326240
947238738670485
1012221112233120
113991a4328524a
121454649914828
136a85a495b49b
1430370d98a640
15162d74ab1465
hexb1d730daca0

12221112233120 has 192 divisors, whose sum is σ = 33128857440000. Its totient is φ = 4173385973760.

The previous prime is 12221112233107. The next prime is 12221112233123. The reversal of 12221112233120 is 2133221112221.

It is not an unprimeable number, because it can be changed into a prime (12221112233123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 284448440 + ... + 284491400.

It is an arithmetic number, because the mean of its divisors is an integer number (172546132500).

Almost surely, 212221112233120 is an apocalyptic number.

12221112233120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12221112233120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16564428720000).

12221112233120 is an abundant number, since it is smaller than the sum of its proper divisors (20907745206880).

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

12221112233120 is a wasteful number, since it uses less digits than its factorization.

12221112233120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43991 (or 43983 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 12221112233120 its reverse (2133221112221), we get a palindrome (14354333345341).

The spelling of 12221112233120 in words is "twelve trillion, two hundred twenty-one billion, one hundred twelve million, two hundred thirty-three thousand, one hundred twenty".