1202102120 has 16 divisors (see below), whose sum is σ = 2704729860. Its totient is φ = 480840832.

The previous prime is 1202102119. The next prime is 1202102129. The reversal of 1202102120 is 212012021.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1197021604 + 5080516 = 34598^2 + 2254^2 .

It is not an unprimeable number, because it can be changed into a prime (1202102129) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15026237 + ... + 15026316.

Almost surely, 2^1202102120 is an apocalyptic number.

1202102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1202102120 is an abundant number, since it is smaller than the sum of its proper divisors (1502627740).

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

1202102120 is a wasteful number, since it uses less digits than its factorization.

1202102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30052564 (or 30052560 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1202102120 is about 34671.3443638980. The cubic root of 1202102120 is about 1063.2787171585.

Adding to 1202102120 its reverse (212012021), we get a palindrome (1414114141).

Subtracting from 1202102120 its reverse (212012021), we obtain a palindrome (990090099).

The spelling of 1202102120 in words is "one billion, two hundred two million, one hundred two thousand, one hundred twenty".