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102011321 = 416733697
BaseRepresentation
bin1100001010010…
…01000110111001
321002221201020002
412011021012321
5202103330241
614042242345
72346040046
oct605110671
9232851202
10102011321
1152645685
122a1b63b5
1318199139
14d7961cd
158e5089b
hex61491b9

102011321 has 8 divisors (see below), whose sum is σ = 104682984. Its totient is φ = 99348480.

The previous prime is 102011317. The next prime is 102011333. The reversal of 102011321 is 123110201.

It can be written as a sum of positive squares in 4 ways, for example, as 4791721 + 97219600 = 2189^2 + 9860^2 .

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 102011321 - 22 = 102011317 is a prime.

It is a super-2 number, since 2×1020113212 = 20812619224330082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102011341) 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, 25745 + ... + 29441.

It is an arithmetic number, because the mean of its divisors is an integer number (13085373).

Almost surely, 2102011321 is an apocalyptic number.

It is an amenable number.

102011321 is a deficient number, since it is larger than the sum of its proper divisors (2671663).

102011321 is an equidigital number, since it uses as much as digits as its factorization.

102011321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4411.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 102011321 is about 10100.0653958279. The cubic root of 102011321 is about 467.2501582854.

Adding to 102011321 its reverse (123110201), we get a palindrome (225121522).

The spelling of 102011321 in words is "one hundred two million, eleven thousand, three hundred twenty-one".

Divisors: 1 41 673 3697 27593 151577 2488081 102011321