121145023252515 has 8 divisors (see below), whose sum is σ = 193832037204048. Its totient is φ = 64610679068000.

The previous prime is 121145023252499. The next prime is 121145023252531. The reversal of 121145023252515 is 515252320541121.

It is an interprime number because it is at equal distance from previous prime (121145023252499) and next prime (121145023252531).

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

It is not a de Polignac number, because 121145023252515 - 2⁴ = 121145023252499 is a prime.

It is a super-3 number, since 3×121145023252515³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4038167441736 + ... + 4038167441765.

It is an arithmetic number, because the mean of its divisors is an integer number (24229004650506).

Almost surely, 2^{121145023252515} is an apocalyptic number.

121145023252515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121145023252515 is a deficient number, since it is larger than the sum of its proper divisors (72687013951533).

121145023252515 is an equidigital number, since it uses as much as digits as its factorization.

121145023252515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076334883509.

The product of its (nonzero) digits is 120000, while the sum is 39.

Adding to 121145023252515 its reverse (515252320541121), we get a palindrome (636397343793636).

The spelling of 121145023252515 in words is "one hundred twenty-one trillion, one hundred forty-five billion, twenty-three million, two hundred fifty-two thousand, five hundred fifteen".