Search a number
-
+
21212132113223 = 311674097379199
BaseRepresentation
bin1001101001010110101011…
…00110010111101101000111
32210002212012221212211020222
410310223111212113231013
510240014421310110343
6113040415144014555
74316345260003262
oct464532546275507
983085187784228
1021212132113223
116839018640387
12246707816145b
13bab3ac20b85c
1453495bb53cd9
1526bb99bdba68
hex134ad5997b47

21212132113223 has 8 divisors (see below), whose sum is σ = 22027510579200. Its totient is φ = 20404948406040.

The previous prime is 21212132113217. The next prime is 21212132113231. The reversal of 21212132113223 is 32231123121212.

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 21212132113223 - 220 = 21212131064647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21212132113192 and 21212132113201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21212132113423) 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, 2048684423 + ... + 2048694776.

It is an arithmetic number, because the mean of its divisors is an integer number (2753438822400).

Almost surely, 221212132113223 is an apocalyptic number.

21212132113223 is a deficient number, since it is larger than the sum of its proper divisors (815378465977).

21212132113223 is a wasteful number, since it uses less digits than its factorization.

21212132113223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097379397.

The product of its digits is 1728, while the sum is 26.

Adding to 21212132113223 its reverse (32231123121212), we get a palindrome (53443255234435).

The spelling of 21212132113223 in words is "twenty-one trillion, two hundred twelve billion, one hundred thirty-two million, one hundred thirteen thousand, two hundred twenty-three".

Divisors: 1 31 167 5177 4097379199 127018755169 684262326233 21212132113223