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70000121201 = 92975349969
BaseRepresentation
bin100000100110001010…
…1010001010101110001
320200200102120121010112
41001030111101111301
52121330012334301
652054013311105
75025445133003
oct1011425212561
9220612517115
1070000121201
112776127513a
1211696a95495
1367a748a87a
143560a48373
151c4a6369bb
hex104c551571

70000121201 has 4 divisors (see below), whose sum is σ = 70075472100. Its totient is φ = 69924770304.

The previous prime is 70000121161. The next prime is 70000121203. The reversal of 70000121201 is 10212100007.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 39164410000 + 30835711201 = 197900^2 + 175601^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-70000121201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70000121203) 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, 37674056 + ... + 37675913.

It is an arithmetic number, because the mean of its divisors is an integer number (17518868025).

Almost surely, 270000121201 is an apocalyptic number.

It is an amenable number.

70000121201 is a deficient number, since it is larger than the sum of its proper divisors (75350899).

70000121201 is an equidigital number, since it uses as much as digits as its factorization.

70000121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75350898.

The product of its (nonzero) digits is 28, while the sum is 14.

Adding to 70000121201 its reverse (10212100007), we get a palindrome (80212221208).

The spelling of 70000121201 in words is "seventy billion, one hundred twenty-one thousand, two hundred one".

Divisors: 1 929 75349969 70000121201