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102221031013 = 349318192077
BaseRepresentation
bin101111100110011011…
…0010010011001100101
3100202211221220102000121
41133030312102121211
53133322040443023
6114543143241541
710246063266403
oct1371466223145
9322757812017
10102221031013
113a39611a622
12179897492b1
1398409c588a
144d3a014473
1529d420cd5d
hex17ccd92665

102221031013 has 8 divisors (see below), whose sum is σ = 102547268600. Its totient is φ = 101894984640.

The previous prime is 102221031007. The next prime is 102221031041. The reversal of 102221031013 is 310130122201.

It can be written as a sum of positive squares in 4 ways, for example, as 13054890564 + 89166140449 = 114258^2 + 298607^2 .

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 102221031013 - 229 = 101684160101 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 (102221035013) 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, 1064131 + ... + 1156207.

It is an arithmetic number, because the mean of its divisors is an integer number (12818408575).

Almost surely, 2102221031013 is an apocalyptic number.

It is an amenable number.

102221031013 is a deficient number, since it is larger than the sum of its proper divisors (326237587).

102221031013 is an equidigital number, since it uses as much as digits as its factorization.

102221031013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95607.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 102221031013 its reverse (310130122201), we get a palindrome (412351153214).

The spelling of 102221031013 in words is "one hundred two billion, two hundred twenty-one million, thirty-one thousand, thirteen".

Divisors: 1 349 3181 92077 1110169 32134873 292896937 102221031013