121203049 has 4 divisors (see below), whose sum is σ = 132221520. Its totient is φ = 110184580.

The previous prime is 121203041. The next prime is 121203079. The reversal of 121203049 is 940302121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 940302121 = 11 ⋅85482011.

It is not a de Polignac number, because 121203049 - 2³ = 121203041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121203041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5509219 + ... + 5509240.

It is an arithmetic number, because the mean of its divisors is an integer number (33055380).

Almost surely, 2^121203049 is an apocalyptic number.

It is an amenable number.

121203049 is a deficient number, since it is larger than the sum of its proper divisors (11018471).

121203049 is a wasteful number, since it uses less digits than its factorization.

121203049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11018470.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121203049 is about 11009.2256312604. The cubic root of 121203049 is about 494.8852558578.

The spelling of 121203049 in words is "one hundred twenty-one million, two hundred three thousand, forty-nine".