221202111010 has 8 divisors (see below), whose sum is σ = 398163799836. Its totient is φ = 88480844400.

The previous prime is 221202110989. The next prime is 221202111017. The reversal of 221202111010 is 10111202122.

It can be written as a sum of positive squares in 2 ways, for example, as 216869970249 + 4332140761 = 465693^2 + 65819^2 .

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 (221202111017) 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, 11060105541 + ... + 11060105560.

Almost surely, 2^221202111010 is an apocalyptic number.

221202111010 is a deficient number, since it is larger than the sum of its proper divisors (176961688826).

221202111010 is a wasteful number, since it uses less digits than its factorization.

221202111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22120211108.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221202111010 its reverse (10111202122), we get a palindrome (231313313132).

The spelling of 221202111010 in words is "two hundred twenty-one billion, two hundred two million, one hundred eleven thousand, ten".