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122111111012 = 221161423110753
BaseRepresentation
bin111000110111001100…
…0111010111101100100
3102200012010121011101012
41301232120322331210
54000040421023022
6132032544521352
711552012214002
oct1615630727544
9380163534335
10122111111012
11478725a2070
121b7ba920258
13b690695697
145ca5885a72
15329a4b4de2
hex1c6e63af64

122111111012 has 48 divisors (see below), whose sum is σ = 237020913024. Its totient is φ = 54577152000.

The previous prime is 122111111011. The next prime is 122111111047. The reversal of 122111111012 is 210111111221.

Adding to 122111111012 its reverse (210111111221), we get a palindrome (332222222233).

It is a super-2 number, since 2×1221111110122 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122111111011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11350628 + ... + 11361380.

It is an arithmetic number, because the mean of its divisors is an integer number (4937935688).

Almost surely, 2122111111012 is an apocalyptic number.

It is an amenable number.

122111111012 is a deficient number, since it is larger than the sum of its proper divisors (114909802012).

122111111012 is a wasteful number, since it uses less digits than its factorization.

122111111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15060 (or 15058 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

The spelling of 122111111012 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, twelve".

Divisors: 1 2 4 11 22 44 61 122 244 671 1342 2684 4231 8462 10753 16924 21506 43012 46541 93082 118283 186164 236566 258091 473132 516182 655933 1032364 1311866 2623732 2839001 5678002 7215263 11356004 14430526 28861052 45495943 90991886 181983772 500455373 1000910746 2001821492 2775252523 5550505046 11101010092 30527777753 61055555506 122111111012