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20300120101 = 73636143717
BaseRepresentation
bin10010111001111110…
…110100000000100101
31221101202020221122001
4102321332310000211
5313033312320401
613154210005301
71316025113422
oct227176640045
957352227561
1020300120101
118677985768
123b26576831
131bb69182b1
14da80cad49
157dc2a0601
hex4b9fb4025

20300120101 has 8 divisors (see below), whose sum is σ = 20581909784. Its totient is φ = 20018430720.

The previous prime is 20300120063. The next prime is 20300120117. The reversal of 20300120101 is 10102100302.

It can be written as a sum of positive squares in 4 ways, for example, as 7590939876 + 12709180225 = 87126^2 + 112735^2 .

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 20300120101 - 29 = 20300119589 is a prime.

It is a super-2 number, since 2×203001201012 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20300120161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442495 + ... + 486211.

It is an arithmetic number, because the mean of its divisors is an integer number (2572738723).

Almost surely, 220300120101 is an apocalyptic number.

It is an amenable number.

20300120101 is a deficient number, since it is larger than the sum of its proper divisors (281789683).

20300120101 is an equidigital number, since it uses as much as digits as its factorization.

20300120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50151.

The product of its (nonzero) digits is 12, while the sum is 10.

Adding to 20300120101 its reverse (10102100302), we get a palindrome (30402220403).

The spelling of 20300120101 in words is "twenty billion, three hundred million, one hundred twenty thousand, one hundred one".

Divisors: 1 73 6361 43717 464353 3191341 278083837 20300120101