11121221141111 has 8 divisors (see below), whose sum is σ = 11170058215920. Its totient is φ = 11072386438848.

The previous prime is 11121221141029. The next prime is 11121221141143. The reversal of 11121221141111 is 11114112212111.

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 11121221141111 - 2¹⁰ = 11121221140087 is a prime.

It is a super-3 number, since 3×11121221141111³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121221141171) 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, 9153155 + ... + 10296731.

It is an arithmetic number, because the mean of its divisors is an integer number (1396257276990).

Almost surely, 2^{11121221141111} is an apocalyptic number.

11121221141111 is a deficient number, since it is larger than the sum of its proper divisors (48837074809).

11121221141111 is a wasteful number, since it uses less digits than its factorization.

11121221141111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186273.

The product of its digits is 32, while the sum is 20.

Adding to 11121221141111 its reverse (11114112212111), we get a palindrome (22235333353222).

The spelling of 11121221141111 in words is "eleven trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred forty-one thousand, one hundred eleven".