Search a number
BaseRepresentation
bin101101101101001110011110…
…111101010000001101100001
3222100202022210220111102200212
4231231032132331100031201
5202322003000412241001
61551311153424023505
760225134343465155
oct5555163675201541
9870668726442625
10201020021212001
1159062126436142
121a66703a461b95
13882215044b314
14378d5c70b5065
151838ed33617bb
hexb6d39ef50361

201020021212001 has 4 divisors (see below), whose sum is σ = 201021216313392. Its totient is φ = 201018826110612.

The previous prime is 201020021211917. The next prime is 201020021212007. The reversal of 201020021212001 is 100212120020102.

Adding to 201020021212001 its reverse (100212120020102), we get a palindrome (301232141232103).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-201020021212001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201020021212007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597298355 + ... + 597634808.

It is an arithmetic number, because the mean of its divisors is an integer number (50255304078348).

Almost surely, 2201020021212001 is an apocalyptic number.

It is an amenable number.

201020021212001 is a deficient number, since it is larger than the sum of its proper divisors (1195101391).

201020021212001 is a wasteful number, since it uses less digits than its factorization.

201020021212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195101390.

The product of its (nonzero) digits is 32, while the sum is 14.

The spelling of 201020021212001 in words is "two hundred one trillion, twenty billion, twenty-one million, two hundred twelve thousand, one".

Divisors: 1 168227 1194933163 201020021212001