1101121121111 has 8 divisors (see below), whose sum is σ = 1201230637824. Its totient is φ = 1001012870520.

The previous prime is 1101121121057. The next prime is 1101121121131. The reversal of 1101121121111 is 1111211211011.

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 1101121121111 - 2¹⁸ = 1101120858967 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 (1101121121131) 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, 3216770 + ... + 3542576.

It is an arithmetic number, because the mean of its divisors is an integer number (150153829728).

Almost surely, 2^{1101121121111} is an apocalyptic number.

1101121121111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101121121111 is a deficient number, since it is larger than the sum of its proper divisors (100109516713).

1101121121111 is a wasteful number, since it uses less digits than its factorization.

1101121121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633061.

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

Adding to 1101121121111 its reverse (1111211211011), we get a palindrome (2212332332122).

The spelling of 1101121121111 in words is "one trillion, one hundred one billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred eleven".