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121020211110 = 2355637165199
BaseRepresentation
bin111000010110101011…
…1011101111110100110
3102120101002212201001010
41300231113131332212
53440322133223420
6131332415043050
711512664551551
oct1605527357646
9376332781033
10121020211110
11473628328a7
121b555510486
13b54867ca96
145c00a35698
15323482a4e0
hex1c2d5ddfa6

121020211110 has 32 divisors (see below), whose sum is σ = 290964441600. Its totient is φ = 32214730208.

The previous prime is 121020211093. The next prime is 121020211111. The reversal of 121020211110 is 11112020121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020211111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3565710 + ... + 3599489.

It is an arithmetic number, because the mean of its divisors is an integer number (9092638800).

Almost surely, 2121020211110 is an apocalyptic number.

121020211110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121020211110 is an abundant number, since it is smaller than the sum of its proper divisors (169944230490).

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

121020211110 is a wasteful number, since it uses less digits than its factorization.

121020211110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7165772.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121020211110 its reverse (11112020121), we get a palindrome (132132231231).

The spelling of 121020211110 in words is "one hundred twenty-one billion, twenty million, two hundred eleven thousand, one hundred ten".

Divisors: 1 2 3 5 6 10 15 30 563 1126 1689 2815 3378 5630 8445 16890 7165199 14330398 21495597 35825995 42991194 71651990 107477985 214955970 4034007037 8068014074 12102021111 20170035185 24204042222 40340070370 60510105555 121020211110