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12120033443 = 719239381289
BaseRepresentation
bin10110100100110100…
…10000100010100011
31011021122222111021112
423102122100202203
5144310212032233
65322354213535
7606226404320
oct132232204243
934248874245
1012120033443
11515a496571
122422b842ab
1311b1ca0a2b
1482d945b47
154ae081048
hex2d26908a3

12120033443 has 16 divisors (see below), whose sum is σ = 14641536000. Its totient is φ = 9800626752.

The previous prime is 12120033413. The next prime is 12120033469. The reversal of 12120033443 is 34433002121.

It is not a de Polignac number, because 12120033443 - 28 = 12120033187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12120033413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158858 + ... + 222431.

It is an arithmetic number, because the mean of its divisors is an integer number (915096000).

Almost surely, 212120033443 is an apocalyptic number.

12120033443 is a deficient number, since it is larger than the sum of its proper divisors (2521502557).

12120033443 is a wasteful number, since it uses less digits than its factorization.

12120033443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381554.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 12120033443 its reverse (34433002121), we get a palindrome (46553035564).

The spelling of 12120033443 in words is "twelve billion, one hundred twenty million, thirty-three thousand, four hundred forty-three".

Divisors: 1 7 19 133 239 1673 4541 31787 381289 2669023 7244491 50711437 91128071 637896497 1731433349 12120033443