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20120222202 = 235364499811
BaseRepresentation
bin10010101111010000…
…100011100111111010
31220221012202012002220
4102233100203213322
5312201234102302
613124302104510
71311412031643
oct225720434772
956835665086
1020120222202
118595382813
123a9627b136
131b8857ba32
14d8c25c6ca
157cb5b74bc
hex4af4239fa

20120222202 has 32 divisors (see below), whose sum is σ = 41010235200. Its totient is φ = 6578507520.

The previous prime is 20120222201. The next prime is 20120222261. The reversal of 20120222202 is 20222202102.

It is not an unprimeable number, because it can be changed into a prime (20120222201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2045877 + ... + 2055687.

It is an arithmetic number, because the mean of its divisors is an integer number (1281569850).

Almost surely, 220120222202 is an apocalyptic number.

20120222202 is an abundant number, since it is smaller than the sum of its proper divisors (20890012998).

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

20120222202 is a wasteful number, since it uses less digits than its factorization.

20120222202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16318.

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20120222202 its reverse (20222202102), we get a palindrome (40342424304).

The spelling of 20120222202 in words is "twenty billion, one hundred twenty million, two hundred twenty-two thousand, two hundred two".

Divisors: 1 2 3 6 53 106 159 318 6449 9811 12898 19347 19622 29433 38694 58866 341797 519983 683594 1025391 1039966 1559949 2050782 3119898 63271139 126542278 189813417 379626834 3353370367 6706740734 10060111101 20120222202