120212111011 has 4 divisors (see below), whose sum is σ = 121335588792. Its totient is φ = 119088633232.

The previous prime is 120212110969. The next prime is 120212111081. The reversal of 120212111011 is 110111212021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110111212021 = 21191 ⋅5196131.

It is a cyclic number.

It is not a de Polignac number, because 120212111011 - 2⁷ = 120212110883 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120212110982 and 120212111000.

It is not an unprimeable number, because it can be changed into a prime (120212111081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561738730 + ... + 561738943.

It is an arithmetic number, because the mean of its divisors is an integer number (30333897198).

Almost surely, 2^120212111011 is an apocalyptic number.

120212111011 is a deficient number, since it is larger than the sum of its proper divisors (1123477781).

120212111011 is a wasteful number, since it uses less digits than its factorization.

120212111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123477780.

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

Adding to 120212111011 its reverse (110111212021), we get a palindrome (230323323032).

The spelling of 120212111011 in words is "one hundred twenty billion, two hundred twelve million, one hundred eleven thousand, eleven".