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101212109983 = 1923346166919
BaseRepresentation
bin101111001000010110…
…1100011110010011111
3100200020122102220120001
41132100231203302133
53124240300004413
6114255102435131
710212062511565
oct1362055436237
9320218386501
10101212109983
1139a18663296
1217747892aa7
13970c983c9a
144c82023a35
1529758684dd
hex1790b63c9f

101212109983 has 16 divisors (see below), whose sum is σ = 111204979200. Its totient is φ = 91688366880.

The previous prime is 101212109981. The next prime is 101212110001. The reversal of 101212109983 is 389901212101.

It is not a de Polignac number, because 101212109983 - 21 = 101212109981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101212109981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1478998 + ... + 1545916.

It is an arithmetic number, because the mean of its divisors is an integer number (6950311200).

Almost surely, 2101212109983 is an apocalyptic number.

101212109983 is a deficient number, since it is larger than the sum of its proper divisors (9992869217).

101212109983 is a wasteful number, since it uses less digits than its factorization.

101212109983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70422.

The product of its (nonzero) digits is 7776, while the sum is 37.

The spelling of 101212109983 in words is "one hundred one billion, two hundred twelve million, one hundred nine thousand, nine hundred eighty-three".

Divisors: 1 19 23 437 3461 65759 66919 79603 1271461 1512457 1539137 29243603 231606659 4400526521 5326953157 101212109983