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120020313012 = 22318155257971
BaseRepresentation
bin110111111000111000…
…1001010001110110100
3102110210102101121201020
41233301301022032310
53431300200004022
6131045255501140
711446133554005
oct1576161121664
9373712347636
10120020313012
114699a379636
121b3166877b0
13b41947a0c2
145b47d131ac
1531c6b6935c
hex1bf1c4a3b4

120020313012 has 24 divisors (see below), whose sum is σ = 281594625312. Its totient is φ = 39785738400.

The previous prime is 120020312981. The next prime is 120020313019. The reversal of 120020313012 is 210313020021.

It is a junction number, because it is equal to n+sod(n) for n = 120020312982 and 120020313000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120020313019) 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, 27626814 + ... + 27631157.

It is an arithmetic number, because the mean of its divisors is an integer number (11733109388).

Almost surely, 2120020313012 is an apocalyptic number.

120020313012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

120020313012 is an abundant number, since it is smaller than the sum of its proper divisors (161574312300).

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

120020313012 is a wasteful number, since it uses less digits than its factorization.

120020313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55258159 (or 55258157 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 120020313012 its reverse (210313020021), we get a palindrome (330333333033).

The spelling of 120020313012 in words is "one hundred twenty billion, twenty million, three hundred thirteen thousand, twelve".

Divisors: 1 2 3 4 6 12 181 362 543 724 1086 2172 55257971 110515942 165773913 221031884 331547826 663095652 10001692751 20003385502 30005078253 40006771004 60010156506 120020313012