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122311102220 = 2256423795203
BaseRepresentation
bin111000111101001001…
…1110100111100001100
3102200201001220202201222
41301322103310330030
54000443120232340
6132104451222512
711556661133516
oct1617223647414
9380631822658
10122311102220
114796547945a
121b8558a7a38
13b6c2c48988
145cc4264bb6
1532acd1b8b5
hex1c7a4f4f0c

122311102220 has 24 divisors (see below), whose sum is σ = 256860011184. Its totient is φ = 48923165376.

The previous prime is 122311102201. The next prime is 122311102241. The reversal of 122311102220 is 22201113221.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1237139 + ... + 1332341.

It is an arithmetic number, because the mean of its divisors is an integer number (10702500466).

Almost surely, 2122311102220 is an apocalyptic number.

122311102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122311102220 is an abundant number, since it is smaller than the sum of its proper divisors (134548908964).

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

122311102220 is a wasteful number, since it uses less digits than its factorization.

122311102220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159449 (or 159447 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 122311102220 its reverse (22201113221), we get a palindrome (144512215441).

The spelling of 122311102220 in words is "one hundred twenty-two billion, three hundred eleven million, one hundred two thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 64237 95203 128474 190406 256948 321185 380812 476015 642370 952030 1284740 1904060 6115555111 12231110222 24462220444 30577775555 61155551110 122311102220