121261115 has 4 divisors (see below), whose sum is σ = 145513344. Its totient is φ = 97008888.

The previous prime is 121261109. The next prime is 121261121. The reversal of 121261115 is 511162121.

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

It is an interprime number because it is at equal distance from previous prime (121261109) and next prime (121261121).

It is a cyclic number.

It is not a de Polignac number, because 121261115 - 2¹⁰ = 121260091 is a prime.

It is a super-2 number, since 2×121261115² = 29408516022086450, which contains 22 as substring.

It is a Duffinian 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, 12126107 + ... + 12126116.

It is an arithmetic number, because the mean of its divisors is an integer number (36378336).

Almost surely, 2^121261115 is an apocalyptic number.

121261115 is a deficient number, since it is larger than the sum of its proper divisors (24252229).

121261115 is an equidigital number, since it uses as much as digits as its factorization.

121261115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24252228.

The product of its digits is 120, while the sum is 20.

The square root of 121261115 is about 11011.8624673576. The cubic root of 121261115 is about 494.9642731756.

The spelling of 121261115 in words is "one hundred twenty-one million, two hundred sixty-one thousand, one hundred fifteen".