211212022202 has 4 divisors (see below), whose sum is σ = 316818033306. Its totient is φ = 105606011100.

The previous prime is 211212022169. The next prime is 211212022207. The reversal of 211212022202 is 202220212112.

It is a happy number.

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., 211194474481 + 17547721 = 459559^2 + 4189^2 .

It is a super-3 number, since 3×211212022202³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (211212022207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52803005549 + ... + 52803005552.

Almost surely, 2^211212022202 is an apocalyptic number.

211212022202 is a deficient number, since it is larger than the sum of its proper divisors (105606011104).

211212022202 is a wasteful number, since it uses less digits than its factorization.

211212022202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105606011103.

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

Adding to 211212022202 its reverse (202220212112), we get a palindrome (413432234314).

The spelling of 211212022202 in words is "two hundred eleven billion, two hundred twelve million, twenty-two thousand, two hundred two".