120120121220203 has 16 divisors (see below), whose sum is σ = 130653398584800. Its totient is φ = 109772934448896.

The previous prime is 120120121220149. The next prime is 120120121220243. The reversal of 120120121220203 is 302022121021021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120120121220203 is a prime.

It is a super-2 number, since 2×120120121220203² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (120120121220243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25719850 + ... + 30029167.

It is an arithmetic number, because the mean of its divisors is an integer number (8165837411550).

Almost surely, 2^{120120121220203} is an apocalyptic number.

120120121220203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

120120121220203 is a deficient number, since it is larger than the sum of its proper divisors (10533277364597).

120120121220203 is a wasteful number, since it uses less digits than its factorization.

120120121220203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55750686.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 120120121220203 its reverse (302022121021021), we get a palindrome (422142242241224).

The spelling of 120120121220203 in words is "one hundred twenty trillion, one hundred twenty billion, one hundred twenty-one million, two hundred twenty thousand, two hundred three".