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80020120122 = 23212752167187
BaseRepresentation
bin100101010000110010…
…0100010001000111010
321122112201222021121200
41022201210202020322
52302340122320442
6100432152515030
75531654540565
oct1124144421072
9248481867550
1080020120122
1130a332a9688
12136126aba76
13771335ab07
143c316d54dc
15213514534c
hex12a192223a

80020120122 has 48 divisors (see below), whose sum is σ = 175080102912. Its totient is φ = 26412160320.

The previous prime is 80020120093. The next prime is 80020120129. The reversal of 80020120122 is 22102102008.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 80020120095 and 80020120104.

It is not an unprimeable number, because it can be changed into a prime (80020120129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1157413 + ... + 1224599.

It is an arithmetic number, because the mean of its divisors is an integer number (3647502144).

Almost surely, 280020120122 is an apocalyptic number.

80020120122 is an abundant number, since it is smaller than the sum of its proper divisors (95059982790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

80020120122 is a wasteful number, since it uses less digits than its factorization.

80020120122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67843 (or 67840 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The spelling of 80020120122 in words is "eighty billion, twenty million, one hundred twenty thousand, one hundred twenty-two".

Divisors: 1 2 3 6 9 18 127 254 381 521 762 1042 1143 1563 2286 3126 4689 9378 66167 67187 132334 134374 198501 201561 397002 403122 595503 604683 1191006 1209366 8532749 17065498 25598247 35004427 51196494 70008854 76794741 105013281 153589482 210026562 315039843 630079686 4445562229 8891124458 13336686687 26673373374 40010060061 80020120122