120102111211 has 4 divisors (see below), whose sum is σ = 120103476472. Its totient is φ = 120100745952.

The previous prime is 120102111197. The next prime is 120102111221. The reversal of 120102111211 is 112111201021.

It is a happy number.

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 120102111211 - 2¹⁵ = 120102078443 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120102111191 and 120102111200.

It is not an unprimeable number, because it can be changed into a prime (120102111221) 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, 540861 + ... + 729886.

It is an arithmetic number, because the mean of its divisors is an integer number (30025869118).

Almost surely, 2^120102111211 is an apocalyptic number.

120102111211 is a deficient number, since it is larger than the sum of its proper divisors (1365261).

120102111211 is an equidigital number, since it uses as much as digits as its factorization.

120102111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1365260.

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

Adding to 120102111211 its reverse (112111201021), we get a palindrome (232213312232).

It can be divided in two parts, 1201021 and 11211, that multiplied together give a palindrome (13464646431).

The spelling of 120102111211 in words is "one hundred twenty billion, one hundred two million, one hundred eleven thousand, two hundred eleven".