1211311133202 has 16 divisors (see below), whose sum is σ = 2422715766912. Its totient is φ = 403754794320.

The previous prime is 1211311133161. The next prime is 1211311133213. The reversal of 1211311133202 is 2023311131121.

It is a super-2 number, since 2×1211311133202² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3726874 + ... + 4038837.

It is an arithmetic number, because the mean of its divisors is an integer number (151419735432).

Almost surely, 2^{1211311133202} is an apocalyptic number.

1211311133202 is an abundant number, since it is smaller than the sum of its proper divisors (1211404633710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211311133202 is a wasteful number, since it uses less digits than its factorization.

1211311133202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7791713.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1211311133202 its reverse (2023311131121), we get a palindrome (3234622264323).

The spelling of 1211311133202 in words is "one trillion, two hundred eleven billion, three hundred eleven million, one hundred thirty-three thousand, two hundred two".