111211021223111 has 8 divisors (see below), whose sum is σ = 114343867030848. Its totient is φ = 108098193600000.

The previous prime is 111211021223041. The next prime is 111211021223119. The reversal of 111211021223111 is 111322120112111.

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 111211021223111 - 2²² = 111211017028807 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 (111211021223119) 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, 5004534890 + ... + 5004557111.

It is an arithmetic number, because the mean of its divisors is an integer number (14292983378856).

Almost surely, 2^{111211021223111} is an apocalyptic number.

111211021223111 is a deficient number, since it is larger than the sum of its proper divisors (3132845807737).

111211021223111 is a wasteful number, since it uses less digits than its factorization.

111211021223111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10009092313.

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 111211021223111 its reverse (111322120112111), we get a palindrome (222533141335222).

The spelling of 111211021223111 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-one million, two hundred twenty-three thousand, one hundred eleven".