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12101000201 = 29417275869
BaseRepresentation
bin10110100010100011…
…01001110000001001
31011020100011111120122
423101101221300021
5144240324001301
65320434233025
7605605542653
oct132121516011
934210144518
1012101000201
11514a776614
122418725775
1311ab068664
1482b1cd6d3
154ac57181b
hex2d1469c09

12101000201 has 4 divisors (see below), whose sum is σ = 12518276100. Its totient is φ = 11683724304.

The previous prime is 12101000147. The next prime is 12101000207. The reversal of 12101000201 is 10200010121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10200010121 = 71457144303.

It can be written as a sum of positive squares in 2 ways, for example, as 5265679225 + 6835320976 = 72565^2 + 82676^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12101000201 is a prime.

It is a super-3 number, since 3×121010002013 (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12101000207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208637906 + ... + 208637963.

It is an arithmetic number, because the mean of its divisors is an integer number (3129569025).

Almost surely, 212101000201 is an apocalyptic number.

It is an amenable number.

12101000201 is a deficient number, since it is larger than the sum of its proper divisors (417275899).

12101000201 is an equidigital number, since it uses as much as digits as its factorization.

12101000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417275898.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12101000201 its reverse (10200010121), we get a palindrome (22301010322).

The spelling of 12101000201 in words is "twelve billion, one hundred one million, two hundred one", and thus it is an aban number.

Divisors: 1 29 417275869 12101000201