1201202120 has 32 divisors (see below), whose sum is σ = 2703957120. Its totient is φ = 480258240.

The previous prime is 1201202087. The next prime is 1201202147. The reversal of 1201202120 is 212021021.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101219 + ... + 112461.

It is an arithmetic number, because the mean of its divisors is an integer number (84498660).

Almost surely, 2^1201202120 is an apocalyptic number.

1201202120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201202120 is an abundant number, since it is smaller than the sum of its proper divisors (1502755000).

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

1201202120 is a wasteful number, since it uses less digits than its factorization.

1201202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13925 (or 13921 counting only the distinct ones).

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

The square root of 1201202120 is about 34658.3629157524. The cubic root of 1201202120 is about 1063.0132960687.

Adding to 1201202120 its reverse (212021021), we get a palindrome (1413223141).

The spelling of 1201202120 in words is "one billion, two hundred one million, two hundred two thousand, one hundred twenty".