221012221211202 has 16 divisors (see below), whose sum is σ = 444466566415872. Its totient is φ = 73263719738160.

The previous prime is 221012221211179. The next prime is 221012221211207. The reversal of 221012221211202 is 202112122210122.

It is not an unprimeable number, because it can be changed into a prime (221012221211207) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101755165218 + ... + 101755167389.

It is an arithmetic number, because the mean of its divisors is an integer number (27779160400992).

Almost surely, 2^{221012221211202} is an apocalyptic number.

221012221211202 is an abundant number, since it is smaller than the sum of its proper divisors (223454345204670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221012221211202 is a wasteful number, since it uses less digits than its factorization.

221012221211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203510332793.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221012221211202 its reverse (202112122210122), we get a palindrome (423124343421324).

The spelling of 221012221211202 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-one million, two hundred eleven thousand, two hundred two".