121494353987 has 8 divisors (see below), whose sum is σ = 123164722656. Its totient is φ = 119824149312.

The previous prime is 121494353983. The next prime is 121494354011. The reversal of 121494353987 is 789353494121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121494353987 - 2² = 121494353983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121494353983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2698898 + ... + 2743544.

It is an arithmetic number, because the mean of its divisors is an integer number (15395590332).

Almost surely, 2^121494353987 is an apocalyptic number.

121494353987 is a deficient number, since it is larger than the sum of its proper divisors (1670368669).

121494353987 is an equidigital number, since it uses as much as digits as its factorization.

121494353987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81997.

The product of its digits is 6531840, while the sum is 56.

The spelling of 121494353987 in words is "one hundred twenty-one billion, four hundred ninety-four million, three hundred fifty-three thousand, nine hundred eighty-seven".