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1002011111209 = 4131412425349
BaseRepresentation
bin11101001010011001000…
…01000010111100101001
310112210100212200110102101
432211030201002330221
5112404104321024314
62044152331333401
7132251524626013
oct16451441027451
93483325613371
101002011111209
11356a50171579
121422435b1261
1373648b33484
14366d75951b3
151b0e80c1174
hexe94c842f29

1002011111209 has 4 divisors (see below), whose sum is σ = 1002013949700. Its totient is φ = 1002008272720.

The previous prime is 1002011111197. The next prime is 1002011111221. The reversal of 1002011111209 is 9021111102001.

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

It is an interprime number because it is at equal distance from previous prime (1002011111197) and next prime (1002011111221).

It can be written as a sum of positive squares in 2 ways, for example, as 170763165225 + 831247945984 = 413235^2 + 911728^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002011111209 - 227 = 1001876893481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002011111249) 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, 799534 + ... + 1625815.

It is an arithmetic number, because the mean of its divisors is an integer number (250503487425).

Almost surely, 21002011111209 is an apocalyptic number.

It is an amenable number.

1002011111209 is a deficient number, since it is larger than the sum of its proper divisors (2838491).

1002011111209 is an equidigital number, since it uses as much as digits as its factorization.

1002011111209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838490.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 1002011111209 in words is "one trillion, two billion, eleven million, one hundred eleven thousand, two hundred nine".

Divisors: 1 413141 2425349 1002011111209