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201210021983 = 1973145068509
BaseRepresentation
bin1011101101100100001…
…1010100100001011111
3201020100200011011121102
42323121003110201133
511244034231200413
6232233513023315
720352112652615
oct2733103244137
9636320134542
10201210021983
11783728a2673
1232bb49b4b3b
1315c87c12209
149a4aa9d6b5
1553797de458
hex2ed90d485f

201210021983 has 8 divisors (see below), whose sum is σ = 214701394800. Its totient is φ = 188008786368.

The previous prime is 201210021979. The next prime is 201210022007. The reversal of 201210021983 is 389120012102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201210021983 - 22 = 201210021979 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 (201210021953) 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, 72532868 + ... + 72535641.

It is an arithmetic number, because the mean of its divisors is an integer number (26837674350).

Almost surely, 2201210021983 is an apocalyptic number.

201210021983 is a deficient number, since it is larger than the sum of its proper divisors (13491372817).

201210021983 is a wasteful number, since it uses less digits than its factorization.

201210021983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145068601.

The product of its (nonzero) digits is 1728, while the sum is 29.

The spelling of 201210021983 in words is "two hundred one billion, two hundred ten million, twenty-one thousand, nine hundred eighty-three".

Divisors: 1 19 73 1387 145068509 2756301671 10590001157 201210021983