2111211201211 has 16 divisors (see below), whose sum is σ = 2519839010304. Its totient is φ = 1729472526144.

The previous prime is 2111211201167. The next prime is 2111211201233. The reversal of 2111211201211 is 1121021121112.

It is a cyclic number.

It is not a de Polignac number, because 2111211201211 - 2¹⁷ = 2111211070139 is a prime.

It is a super-2 number, since 2×2111211201211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2111211201311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5332530 + ... + 5714743.

It is an arithmetic number, because the mean of its divisors is an integer number (157489938144).

Almost surely, 2^{2111211201211} is an apocalyptic number.

2111211201211 is a deficient number, since it is larger than the sum of its proper divisors (408627809093).

2111211201211 is a wasteful number, since it uses less digits than its factorization.

2111211201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11048490.

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

Adding to 2111211201211 its reverse (1121021121112), we get a palindrome (3232232322323).

The spelling of 2111211201211 in words is "two trillion, one hundred eleven billion, two hundred eleven million, two hundred one thousand, two hundred eleven".