121144015 has 4 divisors (see below), whose sum is σ = 145372824. Its totient is φ = 96915208.

The previous prime is 121144007. The next prime is 121144027. The reversal of 121144015 is 510441121.

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

It is a cyclic number.

It is not a de Polignac number, because 121144015 - 2³ = 121144007 is a prime.

It is a super-3 number, since 3×121144015³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121143983 and 121144001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12114397 + ... + 12114406.

It is an arithmetic number, because the mean of its divisors is an integer number (36343206).

Almost surely, 2^121144015 is an apocalyptic number.

121144015 is a deficient number, since it is larger than the sum of its proper divisors (24228809).

121144015 is an equidigital number, since it uses as much as digits as its factorization.

121144015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24228808.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 121144015 is about 11006.5441897082. The cubic root of 121144015 is about 494.8048953912.

Adding to 121144015 its reverse (510441121), we get a palindrome (631585136).

It can be divided in two parts, 12114 and 4015, that added together give a square (16129 = 127²).

The spelling of 121144015 in words is "one hundred twenty-one million, one hundred forty-four thousand, fifteen".