1111121211101 has 8 divisors (see below), whose sum is σ = 1212265672608. Its totient is φ = 1009998990000.

The previous prime is 1111121211071. The next prime is 1111121211107. The reversal of 1111121211101 is 1011121211111.

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

It is not a de Polignac number, because 1111121211101 - 2²² = 1111117016797 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 (1111121211107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5455550 + ... + 5655551.

It is an arithmetic number, because the mean of its divisors is an integer number (151533209076).

Almost surely, 2^{1111121211101} is an apocalyptic number.

1111121211101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111121211101 is a deficient number, since it is larger than the sum of its proper divisors (101144461507).

1111121211101 is a wasteful number, since it uses less digits than its factorization.

1111121211101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11120203.

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

Adding to 1111121211101 its reverse (1011121211111), we get a palindrome (2122242422212).

It can be divided in two parts, 11111 and 21211101, that added together give a palindrome (21222212).

The spelling of 1111121211101 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, two hundred eleven thousand, one hundred one".