111212020212111 has 192 divisors, whose sum is σ = 205155427276800. Its totient is φ = 56485604275200.

The previous prime is 111212020212103. The next prime is 111212020212119.

It is a happy number.

111212020212111 is a `hidden beast` number, since 111 + 212 + 0 + 20 + 212 + 111 = 666.

111212020212111 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (111212020212103) and next prime (111212020212119).

It is not a de Polignac number, because 111212020212111 - 2³ = 111212020212103 is a prime.

It is a super-2 number, since 2×111212020212111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212020212119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 8260560766 + ... + 8260574228.

It is an arithmetic number, because the mean of its divisors is an integer number (1068517850400).

Almost surely, 2^{111212020212111} is an apocalyptic number.

111212020212111 is a deficient number, since it is larger than the sum of its proper divisors (93943407064689).

111212020212111 is a wasteful number, since it uses less digits than its factorization.

111212020212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16326 (or 16323 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

The spelling of 111212020212111 in words is "one hundred eleven trillion, two hundred twelve billion, twenty million, two hundred twelve thousand, one hundred eleven".