12280950881 has 4 divisors (see below), whose sum is σ = 12296132100. Its totient is φ = 12265769664.

The previous prime is 12280950859. The next prime is 12280950883. The reversal of 12280950881 is 18805908221.

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 8456641600 + 3824309281 = 91960^2 + 61841^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12280950881 is a prime.

It is a super-2 number, since 2×12280950881² (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 (12280950883) 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, 7589396 + ... + 7591013.

It is an arithmetic number, because the mean of its divisors is an integer number (3074033025).

Almost surely, 2^12280950881 is an apocalyptic number.

It is an amenable number.

12280950881 is a deficient number, since it is larger than the sum of its proper divisors (15181219).

12280950881 is an equidigital number, since it uses as much as digits as its factorization.

12280950881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15181218.

The product of its (nonzero) digits is 92160, while the sum is 44.

The spelling of 12280950881 in words is "twelve billion, two hundred eighty million, nine hundred fifty thousand, eight hundred eighty-one".