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BaseRepresentation
bin11001001001110…
…01111010110100
3112201000221222022
430210321322310
5413004013022
632534252312
75141323205
oct1444717264
9481027868
10211001012
11a9117202
125a7b7098
1334939691
14200475ac
15137cdc42
hexc939eb4

211001012 has 6 divisors (see below), whose sum is σ = 369251778. Its totient is φ = 105500504.

The previous prime is 211001009. The next prime is 211001033. The reversal of 211001012 is 210100112.

It can be written as a sum of positive squares in only one way, i.e., 136282276 + 74718736 = 11674^2 + 8644^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26375123 + ... + 26375130.

It is an arithmetic number, because the mean of its divisors is an integer number (61541963).

Almost surely, 2211001012 is an apocalyptic number.

It is an amenable number.

211001012 is a deficient number, since it is larger than the sum of its proper divisors (158250766).

211001012 is a wasteful number, since it uses less digits than its factorization.

211001012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52750257 (or 52750255 counting only the distinct ones).

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

The square root of 211001012 is about 14525.8738807688. The cubic root of 211001012 is about 595.3351330947.

Adding to 211001012 its reverse (210100112), we get a palindrome (421101124).

The spelling of 211001012 in words is "two hundred eleven million, one thousand, twelve".

Divisors: 1 2 4 52750253 105500506 211001012