1101121201111 has 4 divisors (see below), whose sum is σ = 1101613434552. Its totient is φ = 1100628967672.

The previous prime is 1101121201109. The next prime is 1101121201121. The reversal of 1101121201111 is 1111021211011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101121201111 - 2¹ = 1101121201109 is a prime.

It is a super-2 number, since 2×1101121201111² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101121201091 and 1101121201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101121201121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246113365 + ... + 246117838.

It is an arithmetic number, because the mean of its divisors is an integer number (275403358638).

Almost surely, 2^{1101121201111} is an apocalyptic number.

1101121201111 is a deficient number, since it is larger than the sum of its proper divisors (492233441).

1101121201111 is an equidigital number, since it uses as much as digits as its factorization.

1101121201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492233440.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1101121201111 its reverse (1111021211011), we get a palindrome (2212142412122).

The spelling of 1101121201111 in words is "one trillion, one hundred one billion, one hundred twenty-one million, two hundred one thousand, one hundred eleven".