221012222220010 has 32 divisors (see below), whose sum is σ = 428438139892560. Its totient is φ = 81601760898048.

The previous prime is 221012222220001. The next prime is 221012222220017. The reversal of 221012222220010 is 10022222210122.

It can be written as a sum of positive squares in 8 ways, for example, as 47475616321 + 220964746603689 = 217889^2 + 14864883^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221012222220010.

It is not an unprimeable number, because it can be changed into a prime (221012222220017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24794047 + ... + 32507986.

Almost surely, 2^{221012222220010} is an apocalyptic number.

221012222220010 is a deficient number, since it is larger than the sum of its proper divisors (207425917672550).

221012222220010 is a wasteful number, since it uses less digits than its factorization.

221012222220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57331722.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 221012222220010 its reverse (10022222210122), we get a palindrome (231034444430132).

The spelling of 221012222220010 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-two million, two hundred twenty thousand, ten".