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2002001201 = 15797126733
BaseRepresentation
bin111011101010100…
…0001110100110001
312011112010012100122
41313111001310301
513100003014301
6530353500025
7100416505124
oct16725016461
95145105318
102002001201
11938094152
1247a571615
1325b9c81c5
1414dc5a3bb
15bab5a81b
hex77541d31

2002001201 has 4 divisors (see below), whose sum is σ = 2002143732. Its totient is φ = 2001858672.

The previous prime is 2002001189. The next prime is 2002001207. The reversal of 2002001201 is 1021002002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1021002002 = 2510501001.

It can be written as a sum of positive squares in 2 ways, for example, as 1079056801 + 922944400 = 32849^2 + 30380^2 .

It is a cyclic number.

It is not a de Polignac number, because 2002001201 - 230 = 928259377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2002001207) 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, 47570 + ... + 79163.

It is an arithmetic number, because the mean of its divisors is an integer number (500535933).

Almost surely, 22002001201 is an apocalyptic number.

It is an amenable number.

2002001201 is a deficient number, since it is larger than the sum of its proper divisors (142531).

2002001201 is a wasteful number, since it uses less digits than its factorization.

2002001201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142530.

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

The square root of 2002001201 is about 44743.7280632716. The cubic root of 2002001201 is about 1260.3411356908.

Adding to 2002001201 its reverse (1021002002), we get a palindrome (3023003203).

The spelling of 2002001201 in words is "two billion, two million, one thousand, two hundred one".

Divisors: 1 15797 126733 2002001201