1211200110111 has 8 divisors (see below), whose sum is σ = 1616496827440. Its totient is φ = 806685066432.

The previous prime is 1211200110101. The next prime is 1211200110137. The reversal of 1211200110111 is 1110110021121.

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

It is not a de Polignac number, because 1211200110111 - 2⁷ = 1211200109983 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 (1211200110101) 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, 195414796 + ... + 195420993.

It is an arithmetic number, because the mean of its divisors is an integer number (202062103430).

Almost surely, 2^{1211200110111} is an apocalyptic number.

1211200110111 is a deficient number, since it is larger than the sum of its proper divisors (405296717329).

1211200110111 is a wasteful number, since it uses less digits than its factorization.

1211200110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390836825.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1211200110111 its reverse (1110110021121), we get a palindrome (2321310131232).

The spelling of 1211200110111 in words is "one trillion, two hundred eleven billion, two hundred million, one hundred ten thousand, one hundred eleven".