1111211112011 has 64 divisors (see below), whose sum is σ = 1571691340800. Its totient is φ = 756631756800.

The previous prime is 1111211111987. The next prime is 1111211112017. The reversal of 1111211112011 is 1102111121111.

It is a cyclic number.

It is not a de Polignac number, because 1111211112011 - 2²² = 1111206917707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111211112017) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 25863395 + ... + 25906323.

It is an arithmetic number, because the mean of its divisors is an integer number (24557677200).

Almost surely, 2^{1111211112011} is an apocalyptic number.

1111211112011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1111211112011 is a deficient number, since it is larger than the sum of its proper divisors (460480228789).

1111211112011 is a wasteful number, since it uses less digits than its factorization.

1111211112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44340.

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

Adding to 1111211112011 its reverse (1102111121111), we get a palindrome (2213322233122).

The spelling of 1111211112011 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred twelve thousand, eleven".