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1220220350143 = 79152271014371
BaseRepresentation
bin10001110000011010110…
…011001110111010111111
311022122121020212022210121
4101300122303032322333
5124443002402201033
62332321140515411
7154105124562124
oct21603263167277
94278536768717
101220220350143
11430546638473
121785a13abb67
138b0b2823532
14430b7bac74b
1521b19e8062d
hex11c1acceebf

1220220350143 has 8 divisors (see below), whose sum is σ = 1235748545280. Its totient is φ = 1204694214360.

The previous prime is 1220220350081. The next prime is 1220220350161. The reversal of 1220220350143 is 3410530220221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220220350143 - 29 = 1220220349631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220220350743) 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, 695748 + ... + 1710118.

It is an arithmetic number, because the mean of its divisors is an integer number (154468568160).

Almost surely, 21220220350143 is an apocalyptic number.

1220220350143 is a deficient number, since it is larger than the sum of its proper divisors (15528195137).

1220220350143 is a wasteful number, since it uses less digits than its factorization.

1220220350143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029677.

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 1220220350143 its reverse (3410530220221), we get a palindrome (4630750570364).

The spelling of 1220220350143 in words is "one trillion, two hundred twenty billion, two hundred twenty million, three hundred fifty thousand, one hundred forty-three".

Divisors: 1 79 15227 1014371 1202933 80135309 15445827217 1220220350143