212201224402 has 4 divisors (see below), whose sum is σ = 318301836606. Its totient is φ = 106100612200.

The previous prime is 212201224387. The next prime is 212201224409. The reversal of 212201224402 is 204422102212.

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., 120609649521 + 91591574881 = 347289^2 + 302641^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (212201224409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53050306099 + ... + 53050306102.

Almost surely, 2^212201224402 is an apocalyptic number.

212201224402 is a deficient number, since it is larger than the sum of its proper divisors (106100612204).

212201224402 is a wasteful number, since it uses less digits than its factorization.

212201224402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106100612203.

The product of its (nonzero) digits is 1024, while the sum is 22.

Adding to 212201224402 its reverse (204422102212), we get a palindrome (416623326614).

The spelling of 212201224402 in words is "two hundred twelve billion, two hundred one million, two hundred twenty-four thousand, four hundred two".