1211102202011 has 24 divisors (see below), whose sum is σ = 1325008996560. Its totient is φ = 1106375088000.

The previous prime is 1211102201993. The next prime is 1211102202019. The reversal of 1211102202011 is 1102022011121.

It is a de Polignac number, because none of the positive numbers 2^k-1211102202011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211102202019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41138645 + ... + 41168073.

It is an arithmetic number, because the mean of its divisors is an integer number (55208708190).

Almost surely, 2^{1211102202011} is an apocalyptic number.

1211102202011 is a deficient number, since it is larger than the sum of its proper divisors (113906794549).

1211102202011 is a wasteful number, since it uses less digits than its factorization.

1211102202011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31967 (or 31954 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1211102202011 its reverse (1102022011121), we get a palindrome (2313124213132).

The spelling of 1211102202011 in words is "one trillion, two hundred eleven billion, one hundred two million, two hundred two thousand, eleven".