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12102401131 = 50232409397
BaseRepresentation
bin10110100010101101…
…11111110001101011
31011020102210200021221
423101112333301223
5144241203314011
65320524242511
7605623466212
oct132126776153
934212720257
1012102401131
115150543107
1224190a0437
1311ab439202
1482b476079
154ac74b971
hex2d15bfc6b

12102401131 has 4 divisors (see below), whose sum is σ = 12104815552. Its totient is φ = 12099986712.

The previous prime is 12102401093. The next prime is 12102401153. The reversal of 12102401131 is 13110420121.

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

It is a cyclic number.

It is not a de Polignac number, because 12102401131 - 233 = 3512466539 is a prime.

It is a super-2 number, since 2×121024011312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12102401431) 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, 1199676 + ... + 1209721.

It is an arithmetic number, because the mean of its divisors is an integer number (3026203888).

Almost surely, 212102401131 is an apocalyptic number.

12102401131 is a deficient number, since it is larger than the sum of its proper divisors (2414421).

12102401131 is an equidigital number, since it uses as much as digits as its factorization.

12102401131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2414420.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12102401131 its reverse (13110420121), we get a palindrome (25212821252).

The spelling of 12102401131 in words is "twelve billion, one hundred two million, four hundred one thousand, one hundred thirty-one".

Divisors: 1 5023 2409397 12102401131