2121220202 has 8 divisors (see below), whose sum is σ = 3197820000. Its totient is φ = 1055280204.

The previous prime is 2121220151. The next prime is 2121220207. The reversal of 2121220202 is 2020221212.

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

It is not an unprimeable number, because it can be changed into a prime (2121220207) 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, 2664452 + ... + 2665247.

It is an arithmetic number, because the mean of its divisors is an integer number (399727500).

Almost surely, 2^2121220202 is an apocalyptic number.

2121220202 is a deficient number, since it is larger than the sum of its proper divisors (1076599798).

2121220202 is a wasteful number, since it uses less digits than its factorization.

2121220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5329900.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 2121220202 is about 46056.7063737736. The cubic root of 2121220202 is about 1284.8780742971.

Adding to 2121220202 its reverse (2020221212), we get a palindrome (4141441414).

It can be divided in two parts, 21212 and 20202, that added together give a palindrome (41414).

The spelling of 2121220202 in words is "two billion, one hundred twenty-one million, two hundred twenty thousand, two hundred two".