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211212200201 = 1289163857409
BaseRepresentation
bin1100010010110100111…
…0100110100100001001
3202012011202000110200112
43010231032212210021
511430030310401301
6241010214244105
721155015036222
oct3045516464411
9665152013615
10211212200201
1181635865162
1234b26656635
1316bc01b2c72
14a31922c249
15576297c9bb
hex312d3a6909

211212200201 has 4 divisors (see below), whose sum is σ = 211376058900. Its totient is φ = 211048341504.

The previous prime is 211212200123. The next prime is 211212200237. The reversal of 211212200201 is 102002212112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 153444558400 + 57767641801 = 391720^2 + 240349^2 .

It is a cyclic number.

It is not a de Polignac number, because 211212200201 - 214 = 211212183817 is a prime.

It is a super-2 number, since 2×2112122002012 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211212200291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81927416 + ... + 81929993.

It is an arithmetic number, because the mean of its divisors is an integer number (52844014725).

Almost surely, 2211212200201 is an apocalyptic number.

It is an amenable number.

211212200201 is a deficient number, since it is larger than the sum of its proper divisors (163858699).

211212200201 is a wasteful number, since it uses less digits than its factorization.

211212200201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163858698.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211212200201 its reverse (102002212112), we get a palindrome (313214412313).

The spelling of 211212200201 in words is "two hundred eleven billion, two hundred twelve million, two hundred thousand, two hundred one".

Divisors: 1 1289 163857409 211212200201