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122212220132 = 22139861218453
BaseRepresentation
bin111000111010001101…
…0100111110011100100
3102200110011212001000102
41301310122213303210
54000242312021012
6132051000003232
711554350505532
oct1616432476344
9380404761012
10122212220132
1147914680922
121b828760518
13b6a8606c72
145cb5085152
1532a42d82c2
hex1c746a7ce4

122212220132 has 12 divisors (see below), whose sum is σ = 213873893436. Its totient is φ = 61105393440.

The previous prime is 122212220131. The next prime is 122212220153. The reversal of 122212220132 is 231022212221.

It can be written as a sum of positive squares in 2 ways, for example, as 56427151936 + 65785068196 = 237544^2 + 256486^2 .

It is not an unprimeable number, because it can be changed into a prime (122212220131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450218 + ... + 668670.

It is an arithmetic number, because the mean of its divisors is an integer number (17822824453).

Almost surely, 2122212220132 is an apocalyptic number.

It is an amenable number.

122212220132 is a deficient number, since it is larger than the sum of its proper divisors (91661673304).

122212220132 is a wasteful number, since it uses less digits than its factorization.

122212220132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358318 (or 358316 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 122212220132 its reverse (231022212221), we get a palindrome (353234432353).

The spelling of 122212220132 in words is "one hundred twenty-two billion, two hundred twelve million, two hundred twenty thousand, one hundred thirty-two".

Divisors: 1 2 4 139861 218453 279722 436906 559444 873812 30553055033 61106110066 122212220132