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102444202021 = 759924432197
BaseRepresentation
bin101111101101000100…
…1100111100000100101
3100210102111211200002111
41133122021213200211
53134301203431041
6115021234441021
710254443230630
oct1373211474045
9323374750074
10102444202021
113a4a0099277
1217a30433171
139878003725
144d5b908c17
1529e8ae2981
hex17da267825

102444202021 has 8 divisors (see below), whose sum is σ = 117274550400. Its totient is φ = 87662719248.

The previous prime is 102444202001. The next prime is 102444202057. The reversal of 102444202021 is 120202444201.

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 102444202021 - 25 = 102444201989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102444201983 and 102444202001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102444202001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12211906 + ... + 12220291.

It is an arithmetic number, because the mean of its divisors is an integer number (14659318800).

Almost surely, 2102444202021 is an apocalyptic number.

It is an amenable number.

102444202021 is a deficient number, since it is larger than the sum of its proper divisors (14830348379).

102444202021 is an equidigital number, since it uses as much as digits as its factorization.

102444202021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24432803.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 102444202021 its reverse (120202444201), we get a palindrome (222646646222).

The spelling of 102444202021 in words is "one hundred two billion, four hundred forty-four million, two hundred two thousand, twenty-one".

Divisors: 1 7 599 4193 24432197 171025379 14634886003 102444202021