120111212011 has 16 divisors (see below), whose sum is σ = 138646810368. Its totient is φ = 101923567200.

The previous prime is 120111211993. The next prime is 120111212017. The reversal of 120111212011 is 110212111021.

It is a happy number.

It is not a de Polignac number, because 120111212011 - 2²⁷ = 119976994283 is a prime.

It is a super-3 number, since 3×120111212011³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120111211982 and 120111212000.

It is not an unprimeable number, because it can be changed into a prime (120111212017) 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, 230496 + ... + 541618.

It is an arithmetic number, because the mean of its divisors is an integer number (8665425648).

Almost surely, 2^120111212011 is an apocalyptic number.

120111212011 is a deficient number, since it is larger than the sum of its proper divisors (18535598357).

120111212011 is a wasteful number, since it uses less digits than its factorization.

120111212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311682.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 120111212011 its reverse (110212111021), we get a palindrome (230323323032).

The spelling of 120111212011 in words is "one hundred twenty billion, one hundred eleven million, two hundred twelve thousand, eleven".