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12002102401 = 22353821087
BaseRepresentation
bin10110010110110000…
…11000110010000001
31010222110001222022011
423023120120302001
5144040014234101
65302542412521
7603265121122
oct131330306201
933873058264
1012002102401
1150a99681a3
1223ab591141
13119371c753
1481c008049
154a3a38751
hex2cb618c81

12002102401 has 4 divisors (see below), whose sum is σ = 12055923712. Its totient is φ = 11948281092.

The previous prime is 12002102311. The next prime is 12002102447. The reversal of 12002102401 is 10420120021.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10420120021 = 55911863731.

It is a cyclic number.

It is not a de Polignac number, because 12002102401 - 211 = 12002100353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002102461) 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, 26910321 + ... + 26910766.

It is an arithmetic number, because the mean of its divisors is an integer number (3013980928).

Almost surely, 212002102401 is an apocalyptic number.

It is an amenable number.

12002102401 is a deficient number, since it is larger than the sum of its proper divisors (53821311).

12002102401 is an equidigital number, since it uses as much as digits as its factorization.

12002102401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53821310.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12002102401 its reverse (10420120021), we get a palindrome (22422222422).

The spelling of 12002102401 in words is "twelve billion, two million, one hundred two thousand, four hundred one".

Divisors: 1 223 53821087 12002102401