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120212122213 = 971732171549
BaseRepresentation
bin110111111110100110…
…0110110101001100101
3102111021210022112110201
41233331030312221211
53432143300402323
6131120310550501
711453653115341
oct1577514665145
9374253275421
10120212122213
1146a88677737
121b36a968431
13b44a127181
145b655a2621
1531d89068ad
hex1bfd336a65

120212122213 has 8 divisors (see below), whose sum is σ = 121460131800. Its totient is φ = 118964290560.

The previous prime is 120212122187. The next prime is 120212122229. The reversal of 120212122213 is 312221212021.

It can be written as a sum of positive squares in 4 ways, for example, as 85414564 + 120126707649 = 9242^2 + 346593^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-120212122213 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 (120212122013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1644363 + ... + 1715911.

It is an arithmetic number, because the mean of its divisors is an integer number (15182516475).

Almost surely, 2120212122213 is an apocalyptic number.

It is an amenable number.

120212122213 is a deficient number, since it is larger than the sum of its proper divisors (1248009587).

120212122213 is an equidigital number, since it uses as much as digits as its factorization.

120212122213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88967.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 120212122213 its reverse (312221212021), we get a palindrome (432433334234).

The spelling of 120212122213 in words is "one hundred twenty billion, two hundred twelve million, one hundred twenty-two thousand, two hundred thirteen".

Divisors: 1 97 17321 71549 1680137 6940253 1239300229 120212122213