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122120313211 = 1379011188947
BaseRepresentation
bin111000110111011110…
…0000001100101111011
3102200012202220200102101
41301232330001211323
54000100300010321
6132033514044231
711552153351401
oct1615674014573
9380182820371
10122120313211
1147877807896
121b801a19677
13b692568080
145ca6b9d471
15329b1d1791
hex1c6ef0197b

122120313211 has 8 divisors (see below), whose sum is σ = 131530939344. Its totient is φ = 112712080800.

The previous prime is 122120313193. The next prime is 122120313247. The reversal of 122120313211 is 112313021221.

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 122120313211 - 25 = 122120313179 is a prime.

It is a super-2 number, since 2×1221203132112 (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 (122120313011) 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, 491761 + ... + 697186.

It is an arithmetic number, because the mean of its divisors is an integer number (16441367418).

Almost surely, 2122120313211 is an apocalyptic number.

122120313211 is a deficient number, since it is larger than the sum of its proper divisors (9410626133).

122120313211 is a wasteful number, since it uses less digits than its factorization.

122120313211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196861.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 122120313211 its reverse (112313021221), we get a palindrome (234433334432).

The spelling of 122120313211 in words is "one hundred twenty-two billion, one hundred twenty million, three hundred thirteen thousand, two hundred eleven".

Divisors: 1 13 7901 102713 1188947 15456311 9393870247 122120313211