120212001109 has 4 divisors (see below), whose sum is σ = 120214794604. Its totient is φ = 120209207616.

The previous prime is 120212001101. The next prime is 120212001139. The reversal of 120212001109 is 901100212021.

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: 901100212021 = 1597 ⋅564245593.

It can be written as a sum of positive squares in 2 ways, for example, as 57835440100 + 62376561009 = 240490^2 + 249753^2 .

It is a cyclic number.

It is not a de Polignac number, because 120212001109 - 2³ = 120212001101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212001101) 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, 1331172 + ... + 1418605.

It is an arithmetic number, because the mean of its divisors is an integer number (30053698651).

Almost surely, 2^120212001109 is an apocalyptic number.

It is an amenable number.

120212001109 is a deficient number, since it is larger than the sum of its proper divisors (2793495).

120212001109 is an equidigital number, since it uses as much as digits as its factorization.

120212001109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2793494.

The product of its (nonzero) digits is 72, while the sum is 19.

The spelling of 120212001109 in words is "one hundred twenty billion, two hundred twelve million, one thousand, one hundred nine".