221211000000202 has 8 divisors (see below), whose sum is σ = 338077188679716. Its totient is φ = 108518603773632.

The previous prime is 221211000000169. The next prime is 221211000000229. The reversal of 221211000000202 is 202000000112122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 219512641089681 + 1698358910521 = 14815959^2 + 1303211^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043448113103 + ... + 1043448113314.

Almost surely, 2^{221211000000202} is an apocalyptic number.

221211000000202 is a deficient number, since it is larger than the sum of its proper divisors (116866188679514).

221211000000202 is a wasteful number, since it uses less digits than its factorization.

221211000000202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2086896226472.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221211000000202 its reverse (202000000112122), we get a palindrome (423211000112324).

The spelling of 221211000000202 in words is "two hundred twenty-one trillion, two hundred eleven billion, two hundred two", and thus it is an aban number.