Search a number
-
+
102020210001 = 3237306366997
BaseRepresentation
bin101111100000011100…
…0001101110101010001
3100202022222000122101100
41133000320031311101
53132414133210001
6114511211055013
710241104322403
oct1370070156521
9322288018340
10102020210001
113a2a2826846
1217932441469
13980b211988
144d1b49ab73
1529c1790586
hex17c0e0dd51

102020210001 has 12 divisors (see below), whose sum is σ = 151345297012. Its totient is φ = 66175271136.

The previous prime is 102020209943. The next prime is 102020210053. The reversal of 102020210001 is 100012020201.

It can be written as a sum of positive squares in 2 ways, for example, as 75589254225 + 26430955776 = 274935^2 + 162576^2 .

It is not a de Polignac number, because 102020210001 - 214 = 102020193617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102020210401) 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, 153183166 + ... + 153183831.

Almost surely, 2102020210001 is an apocalyptic number.

It is an amenable number.

102020210001 is a deficient number, since it is larger than the sum of its proper divisors (49325087011).

102020210001 is a wasteful number, since it uses less digits than its factorization.

102020210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306367040 (or 306367037 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 102020210001 its reverse (100012020201), we get a palindrome (202032230202).

The spelling of 102020210001 in words is "one hundred two billion, twenty million, two hundred ten thousand, one".

Divisors: 1 3 9 37 111 333 306366997 919100991 2757302973 11335578889 34006736667 102020210001