1211112100211 has 8 divisors (see below), whose sum is σ = 1304346894144. Its totient is φ = 1117887638400.

The previous prime is 1211112100181. The next prime is 1211112100217. The reversal of 1211112100211 is 1120012111121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1211112100211 - 2²⁶ = 1211044991347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211112100217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2338715 + ... + 2809236.

It is an arithmetic number, because the mean of its divisors is an integer number (163043361768).

Almost surely, 2^{1211112100211} is an apocalyptic number.

1211112100211 is a deficient number, since it is larger than the sum of its proper divisors (93234793933).

1211112100211 is a wasteful number, since it uses less digits than its factorization.

1211112100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5166061.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1211112100211 its reverse (1120012111121), we get a palindrome (2331124211332).

The spelling of 1211112100211 in words is "one trillion, two hundred eleven billion, one hundred twelve million, one hundred thousand, two hundred eleven".