221002221202010 has 16 divisors (see below), whose sum is σ = 397805871049416. Its totient is φ = 88400472283968.

The previous prime is 221002221201991. The next prime is 221002221202013. The reversal of 221002221202010 is 10202122200122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 220386405903889 + 615815298121 = 14845417^2 + 784739^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 221002221202010.

It is not an unprimeable number, because it can be changed into a prime (221002221202013) 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, 49789817 + ... + 54046556.

Almost surely, 2^{221002221202010} is an apocalyptic number.

221002221202010 is a deficient number, since it is larger than the sum of its proper divisors (176803649847406).

221002221202010 is a wasteful number, since it uses less digits than its factorization.

221002221202010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104049217.

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

Adding to 221002221202010 its reverse (10202122200122), we get a palindrome (231204343402132).

The spelling of 221002221202010 in words is "two hundred twenty-one trillion, two billion, two hundred twenty-one million, two hundred two thousand, ten".