221202220100012 has 24 divisors (see below), whose sum is σ = 387317469248976. Its totient is φ = 110540088142848.

The previous prime is 221202220099979. The next prime is 221202220100053. The reversal of 221202220100012 is 210001022202122.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477705743 + ... + 478168569.

It is an arithmetic number, because the mean of its divisors is an integer number (16138227885374).

Almost surely, 2^{221202220100012} is an apocalyptic number.

It is an amenable number.

221202220100012 is a deficient number, since it is larger than the sum of its proper divisors (166115249148964).

221202220100012 is a wasteful number, since it uses less digits than its factorization.

221202220100012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528497 (or 528495 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 221202220100012 its reverse (210001022202122), we get a palindrome (431203242302134).

The spelling of 221202220100012 in words is "two hundred twenty-one trillion, two hundred two billion, two hundred twenty million, one hundred thousand, twelve".