1202206121 has 8 divisors (see below), whose sum is σ = 1234106880. Its totient is φ = 1170722592.

The previous prime is 1202206111. The next prime is 1202206123. The reversal of 1202206121 is 1216022021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202206121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1202206121.

It is not an unprimeable number, because it can be changed into a prime (1202206123) 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, 98465 + ... + 109998.

It is an arithmetic number, because the mean of its divisors is an integer number (154263360).

Almost surely, 2^1202206121 is an apocalyptic number.

It is an amenable number.

1202206121 is a deficient number, since it is larger than the sum of its proper divisors (31900759).

1202206121 is an equidigital number, since it uses as much as digits as its factorization.

1202206121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208615.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1202206121 is about 34672.8441435080. The cubic root of 1202206121 is about 1063.3093797949.

Adding to 1202206121 its reverse (1216022021), we get a palindrome (2418228142).

The spelling of 1202206121 in words is "one billion, two hundred two million, two hundred six thousand, one hundred twenty-one".