121568744292 has 24 divisors (see below), whose sum is σ = 283748668896. Its totient is φ = 40510305408.

The previous prime is 121568744237. The next prime is 121568744299. The reversal of 121568744292 is 292447865121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121568744299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1535958 + ... + 1613165.

It is an arithmetic number, because the mean of its divisors is an integer number (11822861204).

Almost surely, 2^121568744292 is an apocalyptic number.

121568744292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121568744292 is an abundant number, since it is smaller than the sum of its proper divisors (162179924604).

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

121568744292 is a wasteful number, since it uses less digits than its factorization.

121568744292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3152347 (or 3152345 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 51.

The spelling of 121568744292 in words is "one hundred twenty-one billion, five hundred sixty-eight million, seven hundred forty-four thousand, two hundred ninety-two".