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20010012020201 = 721921493031171
BaseRepresentation
bin1001000110010111100011…
…01010001000110111101001
32121211221100010211211101202
410203023301222020313221
510110321001034121301
6110320250030253545
74133450515546100
oct443136152106751
977757303754352
1020010012020201
116415220141aa5
1222b20a86572b5
13b21c2261c448
144d26bdc2d037
1524a78dd1a66b
hex1232f1a88de9

20010012020201 has 12 divisors (see below), whose sum is σ = 24502055536080. Its totient is φ = 16248731564520.

The previous prime is 20010012020179. The next prime is 20010012020213. The reversal of 20010012020201 is 10202021001002.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2k-20010012020201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20010012020221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10746514655 + ... + 10746516516.

It is an arithmetic number, because the mean of its divisors is an integer number (2041837961340).

Almost surely, 220010012020201 is an apocalyptic number.

It is an amenable number.

20010012020201 is a deficient number, since it is larger than the sum of its proper divisors (4492043515879).

20010012020201 is a wasteful number, since it uses less digits than its factorization.

20010012020201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21493031204 (or 21493031197 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20010012020201 its reverse (10202021001002), we get a palindrome (30212033021203).

The spelling of 20010012020201 in words is "twenty trillion, ten billion, twelve million, twenty thousand, two hundred one".

Divisors: 1 7 19 49 133 931 21493031171 150451218197 408367592249 1053158527379 2858573145743 20010012020201