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22211212013 = 471493171671
BaseRepresentation
bin10100101011111001…
…000011001011101101
32010022221022110212222
4110223321003023231
5330442032241023
614111555205125
71414262121104
oct245371031355
963287273788
1022211212013
119468717371
12437a5a67a5
13212c833703
141109c4103b
1589ee4ecc8
hex52be432ed

22211212013 has 8 divisors (see below), whose sum is σ = 22836038400. Its totient is φ = 21592729360.

The previous prime is 22211212003. The next prime is 22211212031. The reversal of 22211212013 is 31021211222.

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 22211212013 - 26 = 22211211949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22211211982 and 22211212000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22211212003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1578833 + ... + 1592838.

It is an arithmetic number, because the mean of its divisors is an integer number (2854504800).

Almost surely, 222211212013 is an apocalyptic number.

It is an amenable number.

22211212013 is a deficient number, since it is larger than the sum of its proper divisors (624826387).

22211212013 is a wasteful number, since it uses less digits than its factorization.

22211212013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3171867.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22211212013 its reverse (31021211222), we get a palindrome (53232423235).

The spelling of 22211212013 in words is "twenty-two billion, two hundred eleven million, two hundred twelve thousand, thirteen".

Divisors: 1 47 149 7003 3171671 149068537 472578979 22211212013