2121220202110 has 8 divisors (see below), whose sum is σ = 3818196363816. Its totient is φ = 848488080840.

The previous prime is 2121220202077. The next prime is 2121220202111. The reversal of 2121220202110 is 112020221212.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121220202111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106061010096 + ... + 106061010115.

It is an arithmetic number, because the mean of its divisors is an integer number (477274545477).

Almost surely, 2^{2121220202110} is an apocalyptic number.

2121220202110 is a deficient number, since it is larger than the sum of its proper divisors (1696976161706).

2121220202110 is a wasteful number, since it uses less digits than its factorization.

2121220202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212122020218.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2121220202110 its reverse (112020221212), we get a palindrome (2233240423322).

The spelling of 2121220202110 in words is "two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred two thousand, one hundred ten".