212221001202202 has 4 divisors (see below), whose sum is σ = 318331501803306. Its totient is φ = 106110500601100.

The previous prime is 212221001202131. The next prime is 212221001202209. The reversal of 212221001202202 is 202202100122212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120650474778201 + 91570526424001 = 10984101^2 + 9569249^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212221001202202.

It is not an unprimeable number, because it can be changed into a prime (212221001202209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53055250300549 + ... + 53055250300552.

Almost surely, 2^{212221001202202} is an apocalyptic number.

212221001202202 is a deficient number, since it is larger than the sum of its proper divisors (106110500601104).

212221001202202 is a wasteful number, since it uses less digits than its factorization.

212221001202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106110500601103.

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

Adding to 212221001202202 its reverse (202202100122212), we get a palindrome (414423101324414).

The spelling of 212221001202202 in words is "two hundred twelve trillion, two hundred twenty-one billion, one million, two hundred two thousand, two hundred two".