120212121011 has 4 divisors (see below), whose sum is σ = 125438734992. Its totient is φ = 114985507032.

The previous prime is 120212120999. The next prime is 120212121019. The reversal of 120212121011 is 110121212021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 120212121011 - 2³⁰ = 119138379187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120212121019) 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, 2613306956 + ... + 2613307001.

It is an arithmetic number, because the mean of its divisors is an integer number (31359683748).

Almost surely, 2^120212121011 is an apocalyptic number.

120212121011 is a deficient number, since it is larger than the sum of its proper divisors (5226613981).

120212121011 is an equidigital number, since it uses as much as digits as its factorization.

120212121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226613980.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120212121011 its reverse (110121212021), we get a palindrome (230333333032).

The spelling of 120212121011 in words is "one hundred twenty billion, two hundred twelve million, one hundred twenty-one thousand, eleven".