111211011020011 has 32 divisors (see below), whose sum is σ = 129068821422080. Its totient is φ = 93852869011200.

The previous prime is 111211011019993. The next prime is 111211011020029. The reversal of 111211011020011 is 110020110112111.

It is an interprime number because it is at equal distance from previous prime (111211011019993) and next prime (111211011020029).

It is a cyclic number.

It is not a de Polignac number, because 111211011020011 - 2¹³ = 111211011011819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111211011019973 and 111211011020000.

It is not an unprimeable number, because it can be changed into a prime (111211011020311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 409525006 + ... + 409796476.

It is an arithmetic number, because the mean of its divisors is an integer number (4033400669440).

Almost surely, 2^{111211011020011} is an apocalyptic number.

111211011020011 is a deficient number, since it is larger than the sum of its proper divisors (17857810402069).

111211011020011 is a wasteful number, since it uses less digits than its factorization.

111211011020011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273635.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 111211011020011 its reverse (110020110112111), we get a palindrome (221231121132122).

The spelling of 111211011020011 in words is "one hundred eleven trillion, two hundred eleven billion, eleven million, twenty thousand, eleven".