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1220102297 = 2961689713
BaseRepresentation
bin100100010111001…
…0100100010011001
310011000211121200222
41020232110202121
54444321233142
6321023005425
742143461361
oct11056244231
93130747628
101220102297
11576796a07
122a0739875
13165a1232b
14b80839a1
15721abbd2
hex48b94899

1220102297 has 8 divisors (see below), whose sum is σ = 1282868040. Its totient is φ = 1158716160.

The previous prime is 1220102293. The next prime is 1220102333. The reversal of 1220102297 is 7922010221.

It can be written as a sum of positive squares in 4 ways, for example, as 31990336 + 1188111961 = 5656^2 + 34469^2 .

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 1220102297 - 22 = 1220102293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220102293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343088 + ... + 346625.

It is an arithmetic number, because the mean of its divisors is an integer number (160358505).

Almost surely, 21220102297 is an apocalyptic number.

It is an amenable number.

1220102297 is a deficient number, since it is larger than the sum of its proper divisors (62765743).

1220102297 is an equidigital number, since it uses as much as digits as its factorization.

1220102297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689803.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1220102297 is about 34929.9627397454. The cubic root of 1220102297 is about 1068.5595947201.

The spelling of 1220102297 in words is "one billion, two hundred twenty million, one hundred two thousand, two hundred ninety-seven".

Divisors: 1 29 61 1769 689713 20001677 42072493 1220102297