1211212011202 has 16 divisors (see below), whose sum is σ = 1831603715640. Its totient is φ = 600690999168.

The previous prime is 1211212011197. The next prime is 1211212011253. The reversal of 1211212011202 is 2021102121121.

It can be written as a sum of positive squares in 4 ways, for example, as 445795247041 + 765416764161 = 667679^2 + 874881^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3210933 + ... + 3568264.

Almost surely, 2^{1211212011202} is an apocalyptic number.

1211212011202 is a deficient number, since it is larger than the sum of its proper divisors (620391704438).

1211212011202 is a wasteful number, since it uses less digits than its factorization.

1211212011202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6779925.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211212011202 its reverse (2021102121121), we get a palindrome (3232314132323).

The spelling of 1211212011202 in words is "one trillion, two hundred eleven billion, two hundred twelve million, eleven thousand, two hundred two".