Search a number
-
+
10210020001 = 66221154181
BaseRepresentation
bin10011000001001000…
…01000101010100001
3222100112221202101221
421200210020222201
5131402231120001
64405044055041
7511004511106
oct114044105241
928315852357
1010210020001
11436a321165
121b8b394481
13c6937246c
146cbdd2aad
153eb5461a1
hex260908aa1

10210020001 has 4 divisors (see below), whose sum is σ = 10210240404. Its totient is φ = 10209799600.

The previous prime is 10210019993. The next prime is 10210020017. The reversal of 10210020001 is 10002001201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10002001201 = 20177495713.

It can be written as a sum of positive squares in 2 ways, for example, as 3943714401 + 6266305600 = 62799^2 + 79160^2 .

It is a cyclic number.

It is not a de Polignac number, because 10210020001 - 23 = 10210019993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10210020901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10870 + ... + 143311.

It is an arithmetic number, because the mean of its divisors is an integer number (2552560101).

Almost surely, 210210020001 is an apocalyptic number.

It is an amenable number.

10210020001 is a deficient number, since it is larger than the sum of its proper divisors (220403).

10210020001 is an equidigital number, since it uses as much as digits as its factorization.

10210020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220402.

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 10210020001 its reverse (10002001201), we get a palindrome (20212021202).

The spelling of 10210020001 in words is "ten billion, two hundred ten million, twenty thousand, one".

Divisors: 1 66221 154181 10210020001