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201301201221 = 3131512216797
BaseRepresentation
bin1011101101111001111…
…1001001000101000101
3201020121000201120000020
42323132133021011011
511244231101414341
6232250531205353
720354300656401
oct2733637110505
9636530646006
10201301201221
117840a309a0a
123301b446859
1315ca0a87b23
149a58c36101
155382800566
hex2ede7c9145

201301201221 has 8 divisors (see below), whose sum is σ = 270450469344. Its totient is φ = 133176366960.

The previous prime is 201301201217. The next prime is 201301201223. The reversal of 201301201221 is 122102103102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 201301201221 - 22 = 201301201217 is a prime.

It is a super-2 number, since 2×2013012012212 (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201301201221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201301201223) 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, 256108006 + ... + 256108791.

It is an arithmetic number, because the mean of its divisors is an integer number (33806308668).

Almost surely, 2201301201221 is an apocalyptic number.

It is an amenable number.

201301201221 is a deficient number, since it is larger than the sum of its proper divisors (69149268123).

201301201221 is a wasteful number, since it uses less digits than its factorization.

201301201221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512216931.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 201301201221 its reverse (122102103102), we get a palindrome (323403304323).

The spelling of 201301201221 in words is "two hundred one billion, three hundred one million, two hundred one thousand, two hundred twenty-one".

Divisors: 1 3 131 393 512216797 1536650391 67100400407 201301201221