120203121 has 8 divisors (see below), whose sum is σ = 164602624. Its totient is φ = 77969520.

The previous prime is 120203081. The next prime is 120203131. The reversal of 120203121 is 121302021.

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

It is not a de Polignac number, because 120203121 - 2⁹ = 120202609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120203097 and 120203106.

It is not an unprimeable number, because it can be changed into a prime (120203131) 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, 541345 + ... + 541566.

It is an arithmetic number, because the mean of its divisors is an integer number (20575328).

Almost surely, 2^120203121 is an apocalyptic number.

It is an amenable number.

120203121 is a deficient number, since it is larger than the sum of its proper divisors (44399503).

120203121 is a wasteful number, since it uses less digits than its factorization.

120203121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082951.

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

The square root of 120203121 is about 10963.7183929541. The cubic root of 120203121 is about 493.5205576915.

Adding to 120203121 its reverse (121302021), we get a palindrome (241505142).

The spelling of 120203121 in words is "one hundred twenty million, two hundred three thousand, one hundred twenty-one".