1211212200202 has 32 divisors (see below), whose sum is σ = 1899315378000. Its totient is φ = 578555712000.

The previous prime is 1211212200137. The next prime is 1211212200257. The reversal of 1211212200202 is 2020022121121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1156788442681 + 54423757521 = 1075541^2 + 233289^2 .

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 in 15 ways as a sum of consecutive naturals, for example, 9007302 + ... + 9140782.

Almost surely, 2^{1211212200202} is an apocalyptic number.

1211212200202 is a deficient number, since it is larger than the sum of its proper divisors (688103177798).

1211212200202 is a wasteful number, since it uses less digits than its factorization.

1211212200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135162.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1211212200202 its reverse (2020022121121), we get a palindrome (3231234321323).

The spelling of 1211212200202 in words is "one trillion, two hundred eleven billion, two hundred twelve million, two hundred thousand, two hundred two".