120012011221211 has 4 divisors (see below), whose sum is σ = 125229924752592. Its totient is φ = 114794097689832.

The previous prime is 120012011221121. The next prime is 120012011221217. The reversal of 120012011221211 is 112122110210021.

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 120012011221211 - 2¹⁰ = 120012011220187 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120012011221211.

It is not an unprimeable number, because it can be changed into a prime (120012011221217) 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, 2608956765656 + ... + 2608956765701.

It is an arithmetic number, because the mean of its divisors is an integer number (31307481188148).

Almost surely, 2^{120012011221211} is an apocalyptic number.

120012011221211 is a deficient number, since it is larger than the sum of its proper divisors (5217913531381).

120012011221211 is an equidigital number, since it uses as much as digits as its factorization.

120012011221211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217913531380.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 120012011221211 its reverse (112122110210021), we get a palindrome (232134121431232).

The spelling of 120012011221211 in words is "one hundred twenty trillion, twelve billion, eleven million, two hundred twenty-one thousand, two hundred eleven".