1211002202111 has 64 divisors (see below), whose sum is σ = 1397458621440. Its totient is φ = 1040923699200.

The previous prime is 1211002202051. The next prime is 1211002202129. The reversal of 1211002202111 is 1112022001121.

It is a cyclic number.

It is not a de Polignac number, because 1211002202111 - 2¹⁸ = 1211001939967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211002202131) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1152237536 + ... + 1152238586.

It is an arithmetic number, because the mean of its divisors is an integer number (21835290960).

Almost surely, 2^{1211002202111} is an apocalyptic number.

1211002202111 is a deficient number, since it is larger than the sum of its proper divisors (186456419329).

1211002202111 is a wasteful number, since it uses less digits than its factorization.

1211002202111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776.

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

Adding to 1211002202111 its reverse (1112022001121), we get a palindrome (2323024203232).

The spelling of 1211002202111 in words is "one trillion, two hundred eleven billion, two million, two hundred two thousand, one hundred eleven".