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202131212201 = 392956599091
BaseRepresentation
bin1011110000111111110…
…1011000011110101001
3201022201212112111000122
42330033331120132221
511302431042242301
6232505141213025
720413666645442
oct2741775303651
9638655474018
10202131212201
11787a58884a6
1233211401175
13160a3a17999
149ad71742c9
1553d060481b
hex2f0ff587a9

202131212201 has 8 divisors (see below), whose sum is σ = 202240629600. Its totient is φ = 202021832160.

The previous prime is 202131212197. The next prime is 202131212209. The reversal of 202131212201 is 102212131202.

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 202131212201 - 22 = 202131212197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202131212201.

It is not an unprimeable number, because it can be changed into a prime (202131212209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22229666 + ... + 22238756.

It is an arithmetic number, because the mean of its divisors is an integer number (25280078700).

Almost surely, 2202131212201 is an apocalyptic number.

It is an amenable number.

202131212201 is a deficient number, since it is larger than the sum of its proper divisors (109417399).

202131212201 is an equidigital number, since it uses as much as digits as its factorization.

202131212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18679.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 202131212201 its reverse (102212131202), we get a palindrome (304343343403).

The spelling of 202131212201 in words is "two hundred two billion, one hundred thirty-one million, two hundred twelve thousand, two hundred one".

Divisors: 1 3929 5659 9091 22234211 35718539 51445969 202131212201