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122121002212 = 221147127946171
BaseRepresentation
bin111000110111011111…
…0101001110011100100
3102200012211012200112221
41301232332221303210
54000100434032322
6132033540522124
711552162251216
oct1615676516344
9380184180487
10122121002212
1147878138510
121b8020b0344
13b692749871
145ca6cdc5b6
15329b2ba9c7
hex1c6efa9ce4

122121002212 has 48 divisors (see below), whose sum is σ = 238291845120. Its totient is φ = 54284839200.

The previous prime is 122121002191. The next prime is 122121002219. The reversal of 122121002212 is 212200121221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (122121002219) 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, 2621887 + ... + 2668057.

It is an arithmetic number, because the mean of its divisors is an integer number (4964413440).

Almost surely, 2122121002212 is an apocalyptic number.

It is an amenable number.

122121002212 is a deficient number, since it is larger than the sum of its proper divisors (116170842908).

122121002212 is a wasteful number, since it uses less digits than its factorization.

122121002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47512 (or 47510 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 122121002212 its reverse (212200121221), we get a palindrome (334321123433).

The spelling of 122121002212 in words is "one hundred twenty-two billion, one hundred twenty-one million, two thousand, two hundred twelve".

Divisors: 1 2 4 11 22 44 47 94 188 517 1034 1279 2068 2558 5116 14069 28138 46171 56276 60113 92342 120226 184684 240452 507881 661243 1015762 1322486 2031524 2170037 2644972 4340074 8680148 23870407 47740814 59052709 95481628 118105418 236210836 649579799 1299159598 2598319196 2775477323 5550954646 11101909292 30530250553 61060501106 122121002212