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201040000121 = 792725361423
BaseRepresentation
bin1011101100111011101…
…0101111010001111001
3201012220211020011110102
42323032322233101321
511243212220000441
6232205000525145
720344646543222
oct2731672572171
9635824204412
10201040000121
1178295925734
1232b67a807b5
1315c5b922c6c
149a32282249
15536990769b
hex2eceeaf479

201040000121 has 4 divisors (see below), whose sum is σ = 201065369472. Its totient is φ = 201014630772.

The previous prime is 201040000081. The next prime is 201040000153. The reversal of 201040000121 is 121000040102.

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-201040000121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201040000621) 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, 12672785 + ... + 12688638.

It is an arithmetic number, because the mean of its divisors is an integer number (50266342368).

Almost surely, 2201040000121 is an apocalyptic number.

It is an amenable number.

201040000121 is a deficient number, since it is larger than the sum of its proper divisors (25369351).

201040000121 is an equidigital number, since it uses as much as digits as its factorization.

201040000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25369350.

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

Adding to 201040000121 its reverse (121000040102), we get a palindrome (322040040223).

The spelling of 201040000121 in words is "two hundred one billion, forty million, one hundred twenty-one", and thus it is an aban number.

Divisors: 1 7927 25361423 201040000121