12193121240 has 16 divisors (see below), whose sum is σ = 27434522880. Its totient is φ = 4877248480.

The previous prime is 12193121231. The next prime is 12193121249. The reversal of 12193121240 is 4212139121.

It is an interprime number because it is at equal distance from previous prime (12193121231) and next prime (12193121249).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12193121249) 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, 152413976 + ... + 152414055.

It is an arithmetic number, because the mean of its divisors is an integer number (1714657680).

Almost surely, 2^12193121240 is an apocalyptic number.

12193121240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12193121240 is an abundant number, since it is smaller than the sum of its proper divisors (15241401640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12193121240 is a wasteful number, since it uses less digits than its factorization.

12193121240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304828042 (or 304828038 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 12193121240 in words is "twelve billion, one hundred ninety-three million, one hundred twenty-one thousand, two hundred forty".