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121212112012 = 22173343533213
BaseRepresentation
bin111000011100011001…
…1100000110010001100
3102120212110222021120221
41300320303200302030
53441220300041022
6131403432121124
711520514644445
oct1607063406214
9376773867527
10121212112012
1147451093892
121b5a98361a4
13b57935c804
145c1c30a2cc
1532465d4cc7
hex1c38ce0c8c

121212112012 has 24 divisors (see below), whose sum is σ = 224666519616. Its totient is φ = 57023824128.

The previous prime is 121212112001. The next prime is 121212112019. The reversal of 121212112012 is 210211212121.

Adding to 121212112012 its reverse (210211212121), we get a palindrome (331423324133).

It is not an unprimeable number, because it can be changed into a prime (121212112019) 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, 39283 + ... + 493930.

It is an arithmetic number, because the mean of its divisors is an integer number (9361104984).

Almost surely, 2121212112012 is an apocalyptic number.

It is an amenable number.

121212112012 is a deficient number, since it is larger than the sum of its proper divisors (103454407604).

121212112012 is a wasteful number, since it uses less digits than its factorization.

121212112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536577 (or 536575 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

The spelling of 121212112012 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred twelve thousand, twelve".

Divisors: 1 2 4 17 34 68 3343 6686 13372 56831 113662 227324 533213 1066426 2132852 9064621 18129242 36258484 1782531059 3565062118 7130124236 30303028003 60606056006 121212112012