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211444103421 = 32127131848013
BaseRepresentation
bin1100010011101100001…
…1001111100011111101
3202012202220101101002200
43010323003033203331
511431014142302141
6241045220542113
721163532140005
oct3047303174375
9665686341080
10211444103421
1181744758511
1234b90251939
1316c2925a5c5
14a33bd57005
155777ed9ab6
hex313b0cf8fd

211444103421 has 12 divisors (see below), whose sum is σ = 305443449948. Its totient is φ = 140951571264.

The previous prime is 211444103369. The next prime is 211444103441. The reversal of 211444103421 is 124301444112.

211444103421 is a `hidden beast` number, since 211 + 4 + 4 + 410 + 34 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 184780479321 + 26663624100 = 429861^2 + 163290^2 .

It is not a de Polignac number, because 211444103421 - 219 = 211443579133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211444103441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 809590 + ... + 1038423.

It is an arithmetic number, because the mean of its divisors is an integer number (25453620829).

Almost surely, 2211444103421 is an apocalyptic number.

It is an amenable number.

211444103421 is a deficient number, since it is larger than the sum of its proper divisors (93999346527).

211444103421 is a wasteful number, since it uses less digits than its factorization.

211444103421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1860732 (or 1860729 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 211444103421 its reverse (124301444112), we get a palindrome (335745547533).

The spelling of 211444103421 in words is "two hundred eleven billion, four hundred forty-four million, one hundred three thousand, four hundred twenty-one".

Divisors: 1 3 9 12713 38139 114417 1848013 5544039 16632117 23493789269 70481367807 211444103421