201221202110 has 16 divisors (see below), whose sum is σ = 362423300400. Its totient is φ = 80438450496.

The previous prime is 201221202107. The next prime is 201221202121. The reversal of 201221202110 is 11202122102.

It is a congruent 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, 6236900 + ... + 6269079.

It is an arithmetic number, because the mean of its divisors is an integer number (22651456275).

Almost surely, 2^201221202110 is an apocalyptic number.

201221202110 is a deficient number, since it is larger than the sum of its proper divisors (161202098290).

201221202110 is a wasteful number, since it uses less digits than its factorization.

201221202110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12507595.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201221202110 its reverse (11202122102), we get a palindrome (212423324212).

The spelling of 201221202110 in words is "two hundred one billion, two hundred twenty-one million, two hundred two thousand, one hundred ten".