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212203111201 = 1798473126761
BaseRepresentation
bin1100010110100001001…
…0101000001100100001
3202021201210120222000221
43011220102220030201
511434042444024301
6241252413043041
721221406453454
oct3055022501441
9667653528027
10212203111201
1181aa4140274
1235162486481
131701a58a133
14a3b0a9149b
1557be965da1
hex31684a8321

212203111201 has 8 divisors (see below), whose sum is σ = 224689701384. Its totient is φ = 199716971520.

The previous prime is 212203111193. The next prime is 212203111223. The reversal of 212203111201 is 102111302212.

It can be written as a sum of positive squares in 4 ways, for example, as 82527500176 + 129675611025 = 287276^2 + 360105^2 .

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 212203111201 - 23 = 212203111193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212203111261) 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, 1610661 + ... + 1737421.

It is an arithmetic number, because the mean of its divisors is an integer number (28086212673).

Almost surely, 2212203111201 is an apocalyptic number.

It is an amenable number.

212203111201 is a deficient number, since it is larger than the sum of its proper divisors (12486590183).

212203111201 is a wasteful number, since it uses less digits than its factorization.

212203111201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225251.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 212203111201 its reverse (102111302212), we get a palindrome (314314413413).

The spelling of 212203111201 in words is "two hundred twelve billion, two hundred three million, one hundred eleven thousand, two hundred one".

Divisors: 1 17 98473 126761 1674041 2154937 12482535953 212203111201