1101220121111 has 8 divisors (see below), whose sum is σ = 1271997573264. Its totient is φ = 942220424320.

The previous prime is 1101220121107. The next prime is 1101220121153. The reversal of 1101220121111 is 1111210221011.

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

It is a cyclic number.

It is not a de Polignac number, because 1101220121111 - 2² = 1101220121107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101220121171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2944438640 + ... + 2944439013.

It is an arithmetic number, because the mean of its divisors is an integer number (158999696658).

Almost surely, 2^{1101220121111} is an apocalyptic number.

1101220121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101220121111 is a deficient number, since it is larger than the sum of its proper divisors (170777452153).

1101220121111 is a wasteful number, since it uses less digits than its factorization.

1101220121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5888877681.

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

Adding to 1101220121111 its reverse (1111210221011), we get a palindrome (2212430342122).

The spelling of 1101220121111 in words is "one trillion, one hundred one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred eleven".