1203020121 has 8 divisors (see below), whose sum is σ = 1619600320. Its totient is φ = 794226672.

The previous prime is 1203020081. The next prime is 1203020167. The reversal of 1203020121 is 1210203021.

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

It is not a de Polignac number, because 1203020121 - 2⁶ = 1203020057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203020097 and 1203020106.

It is not an unprimeable number, because it can be changed into a prime (1203025121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1946326 + ... + 1946943.

It is an arithmetic number, because the mean of its divisors is an integer number (202450040).

Almost surely, 2^1203020121 is an apocalyptic number.

It is an amenable number.

1203020121 is a deficient number, since it is larger than the sum of its proper divisors (416580199).

1203020121 is a wasteful number, since it uses less digits than its factorization.

1203020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893375.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1203020121 is about 34684.5804501078. The cubic root of 1203020121 is about 1063.5493105206.

Adding to 1203020121 its reverse (1210203021), we get a palindrome (2413223142).

The spelling of 1203020121 in words is "one billion, two hundred three million, twenty thousand, one hundred twenty-one".