120212111011221 has 20 divisors (see below), whose sum is σ = 187383773688672. Its totient is φ = 76656998324808.

The previous prime is 120212111011141. The next prime is 120212111011243. The reversal of 120212111011221 is 122110111212021.

It is a happy number.

120212111011221 is a `hidden beast` number, since 1 + 202 + 121 + 110 + 11 + 221 = 666.

It is not a de Polignac number, because 120212111011221 - 2¹⁹ = 120212110486933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120212111011194 and 120212111011203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120212111011271) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 32263044571 + ... + 32263048296.

Almost surely, 2^{120212111011221} is an apocalyptic number.

It is an amenable number.

120212111011221 is a deficient number, since it is larger than the sum of its proper divisors (67171662677451).

120212111011221 is an equidigital number, since it uses as much as digits as its factorization.

120212111011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64526092902 (or 64526092893 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 120212111011221 its reverse (122110111212021), we get a palindrome (242322222223242).

The spelling of 120212111011221 in words is "one hundred twenty trillion, two hundred twelve billion, one hundred eleven million, eleven thousand, two hundred twenty-one".