221012221012202 has 16 divisors (see below), whose sum is σ = 336535409903112. Its totient is φ = 108845089075200.

The previous prime is 221012221012189. The next prime is 221012221012211. The reversal of 221012221012202 is 202210122210122.

It can be written as a sum of positive squares in 4 ways, for example, as 213322353702481 + 7689867309721 = 14605559^2 + 2773061^2 .

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, 2834468543 + ... + 2834546514.

Almost surely, 2^{221012221012202} is an apocalyptic number.

221012221012202 is a deficient number, since it is larger than the sum of its proper divisors (115523188890910).

221012221012202 is a wasteful number, since it uses less digits than its factorization.

221012221012202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669015353.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 221012221012202 its reverse (202210122210122), we get a palindrome (423222343222324).

The spelling of 221012221012202 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-one million, twelve thousand, two hundred two".