1203123002120 has 64 divisors (see below), whose sum is σ = 2925634526640. Its totient is φ = 442649088000.

The previous prime is 1203123002101. The next prime is 1203123002153. The reversal of 1203123002120 is 212003213021.

It can be written as a sum of positive squares in 8 ways, for example, as 282532645444 + 920590356676 = 531538^2 + 959474^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 3970781 + ... + 4263020.

Almost surely, 2^{1203123002120} is an apocalyptic number.

1203123002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203123002120 is an abundant number, since it is smaller than the sum of its proper divisors (1722511524520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1203123002120 is a wasteful number, since it uses less digits than its factorization.

1203123002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234106 (or 8234102 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 1203123002120 its reverse (212003213021), we get a palindrome (1415126215141).

The spelling of 1203123002120 in words is "one trillion, two hundred three billion, one hundred twenty-three million, two thousand, one hundred twenty".