211211021200202 has 4 divisors (see below), whose sum is σ = 316816531800306. Its totient is φ = 105605510600100.

The previous prime is 211211021200181. The next prime is 211211021200229. The reversal of 211211021200202 is 202002120112112.

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., 172926471322801 + 38284549877401 = 13150151^2 + 6187451^2 .

It is a super-2 number, since 2×211211021200202² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52802755300049 + ... + 52802755300052.

Almost surely, 2^{211211021200202} is an apocalyptic number.

211211021200202 is a deficient number, since it is larger than the sum of its proper divisors (105605510600104).

211211021200202 is a wasteful number, since it uses less digits than its factorization.

211211021200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105605510600103.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211211021200202 its reverse (202002120112112), we get a palindrome (413213141312314).

The spelling of 211211021200202 in words is "two hundred eleven trillion, two hundred eleven billion, twenty-one million, two hundred thousand, two hundred two".