1111242221111 has 16 divisors (see below), whose sum is σ = 1238118455808. Its totient is φ = 988677153600.

The previous prime is 1111242221081. The next prime is 1111242221183. The reversal of 1111242221111 is 1111222421111.

It is a cyclic number.

It is not a de Polignac number, because 1111242221111 - 2³⁴ = 1094062351927 is a prime.

It is a super-2 number, since 2×1111242221111² (a number of 25 digits) contains 22 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 (1111242221311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13941491 + ... + 14020971.

It is an arithmetic number, because the mean of its divisors is an integer number (77382403488).

Almost surely, 2^{1111242221111} is an apocalyptic number.

1111242221111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111242221111 is a deficient number, since it is larger than the sum of its proper divisors (126876234697).

1111242221111 is a wasteful number, since it uses less digits than its factorization.

1111242221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106582.

The product of its digits is 64, while the sum is 20.

Adding to 1111242221111 its reverse (1111222421111), we get a palindrome (2222464642222).

The spelling of 1111242221111 in words is "one trillion, one hundred eleven billion, two hundred forty-two million, two hundred twenty-one thousand, one hundred eleven".