121103957 has 4 divisors (see below), whose sum is σ = 130419660. Its totient is φ = 111788256.

The previous prime is 121103951. The next prime is 121103959. The reversal of 121103957 is 759301121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 759301121 = 47 ⋅16155343.

It can be written as a sum of positive squares in 2 ways, for example, as 11566801 + 109537156 = 3401^2 + 10466^2 .

It is a cyclic number.

It is not a de Polignac number, because 121103957 - 2⁶ = 121103893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4657832 + ... + 4657857.

It is an arithmetic number, because the mean of its divisors is an integer number (32604915).

Almost surely, 2^121103957 is an apocalyptic number.

It is an amenable number.

121103957 is a deficient number, since it is larger than the sum of its proper divisors (9315703).

121103957 is an equidigital number, since it uses as much as digits as its factorization.

121103957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315702.

The product of its (nonzero) digits is 1890, while the sum is 29.

The square root of 121103957 is about 11004.7243036798. The cubic root of 121103957 is about 494.7503512753.

The spelling of 121103957 in words is "one hundred twenty-one million, one hundred three thousand, nine hundred fifty-seven".