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10202012218 = 231391162499
BaseRepresentation
bin10011000000001011…
…00101101000111010
3222022222212220210101
421200011211220322
5131343203342333
64404200310014
7510546446566
oct114005455072
928288786711
1010202012218
114365851862
121b8877230a
13c677ca628
146cad0a6a6
153ea9b367d
hex260165a3a

10202012218 has 8 divisors (see below), whose sum is σ = 15303600000. Its totient is φ = 5100812220.

The previous prime is 10202012203. The next prime is 10202012243. The reversal of 10202012218 is 81221020201.

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

It is a junction number, because it is equal to n+sod(n) for n = 10202012195 and 10202012204.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18468 + ... + 144031.

It is an arithmetic number, because the mean of its divisors is an integer number (1912950000).

Almost surely, 210202012218 is an apocalyptic number.

10202012218 is a deficient number, since it is larger than the sum of its proper divisors (5101587782).

10202012218 is a wasteful number, since it uses less digits than its factorization.

10202012218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193892.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10202012218 its reverse (81221020201), we get a palindrome (91423032419).

The spelling of 10202012218 in words is "ten billion, two hundred two million, twelve thousand, two hundred eighteen".

Divisors: 1 2 31391 62782 162499 324998 5101006109 10202012218