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12002112011 = 23521830957
BaseRepresentation
bin10110010110110000…
…11011001000001011
31010222110002110111002
423023120123020023
5144040020041021
65302542525215
7603265161131
oct131330331013
933873073432
1012002112011
1150a997443a
1223ab59680b
131193723c36
1481c00b751
154a3a3b50b
hex2cb61b20b

12002112011 has 4 divisors (see below), whose sum is σ = 12523942992. Its totient is φ = 11480281032.

The previous prime is 12002111987. The next prime is 12002112043. The reversal of 12002112011 is 11021120021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11021120021 = 28338943887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12002112011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12002111983 and 12002112001.

It is not an unprimeable number, because it can be changed into a prime (12002112061) 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, 260915456 + ... + 260915501.

It is an arithmetic number, because the mean of its divisors is an integer number (3130985748).

Almost surely, 212002112011 is an apocalyptic number.

12002112011 is a deficient number, since it is larger than the sum of its proper divisors (521830981).

12002112011 is an equidigital number, since it uses as much as digits as its factorization.

12002112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521830980.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12002112011 its reverse (11021120021), we get a palindrome (23023232032).

The spelling of 12002112011 in words is "twelve billion, two million, one hundred twelve thousand, eleven".

Divisors: 1 23 521830957 12002112011