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992103012212 = 221319739669997
BaseRepresentation
bin11100110111111011111…
…00101001011101110100
310111211210100211212202212
432123331330221131310
5112223311332342322
62035433230352552
7131451144315014
oct16337574513564
93454710755685
10992103012212
11352826317104
1214033935b758
137272a1b22c0
1436037715c44
151ac183180e2
hexe6fdf29774

992103012212 has 24 divisors (see below), whose sum is σ = 1870680453096. Its totient is φ = 457661570688.

The previous prime is 992103012191. The next prime is 992103012217. The reversal of 992103012212 is 212210301299.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1289815396 + 990813196816 = 35914^2 + 995396^2 .

It is a super-2 number, since 2×9921030122122 (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992103012217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4732403 + ... + 4937594.

It is an arithmetic number, because the mean of its divisors is an integer number (77945018879).

Almost surely, 2992103012212 is an apocalyptic number.

It is an amenable number.

992103012212 is a deficient number, since it is larger than the sum of its proper divisors (878577440884).

992103012212 is a wasteful number, since it uses less digits than its factorization.

992103012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9671987 (or 9671985 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The spelling of 992103012212 in words is "nine hundred ninety-two billion, one hundred three million, twelve thousand, two hundred twelve".

Divisors: 1 2 4 13 26 52 1973 3946 7892 25649 51298 102596 9669997 19339994 38679988 125709961 251419922 502839844 19078904081 38157808162 76315616324 248025753053 496051506106 992103012212