121168427907 has 4 divisors (see below), whose sum is σ = 161557903880. Its totient is φ = 80778951936.

The previous prime is 121168427903. The next prime is 121168427927. The reversal of 121168427907 is 709724861121.

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

It is not a de Polignac number, because 121168427907 - 2² = 121168427903 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121168427903) 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, 20194737982 + ... + 20194737987.

It is an arithmetic number, because the mean of its divisors is an integer number (40389475970).

Almost surely, 2^121168427907 is an apocalyptic number.

121168427907 is a deficient number, since it is larger than the sum of its proper divisors (40389475973).

121168427907 is an equidigital number, since it uses as much as digits as its factorization.

121168427907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40389475972.

The product of its (nonzero) digits is 338688, while the sum is 48.

The spelling of 121168427907 in words is "one hundred twenty-one billion, one hundred sixty-eight million, four hundred twenty-seven thousand, nine hundred seven".