1111212111101 has 16 divisors (see below), whose sum is σ = 1152140544000. Its totient is φ = 1070603587200.

The previous prime is 1111212111077. The next prime is 1111212111133. The reversal of 1111212111101 is 1011112121111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111212111101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111212111701) 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, 34428311 + ... + 34460571.

It is an arithmetic number, because the mean of its divisors is an integer number (72008784000).

Almost surely, 2^{1111212111101} is an apocalyptic number.

It is an amenable number.

1111212111101 is a deficient number, since it is larger than the sum of its proper divisors (40928432899).

1111212111101 is a wasteful number, since it uses less digits than its factorization.

1111212111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37180.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 1111212111101 its reverse (1011112121111), we get a palindrome (2122324232212).

It can be divided in two parts, 111121 and 2111101, that added together give a palindrome (2222222).

The spelling of 1111212111101 in words is "one trillion, one hundred eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred one".