120220012111221 has 36 divisors (see below), whose sum is σ = 194107859225280. Its totient is φ = 71625687711600.

The previous prime is 120220012111211. The next prime is 120220012111223. The reversal of 120220012111221 is 122111210022021.

120220012111221 is a `hidden beast` number, since 12 + 0 + 220 + 0 + 1 + 211 + 1 + 221 = 666.

It is not a de Polignac number, because 120220012111221 - 2⁷ = 120220012111093 is a prime.

It is a super-2 number, since 2×120220012111221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120220012111194 and 120220012111203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120220012111223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 935485485 + ... + 935613986.

It is an arithmetic number, because the mean of its divisors is an integer number (5391884978480).

Almost surely, 2^{120220012111221} is an apocalyptic number.

120220012111221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120220012111221 is a deficient number, since it is larger than the sum of its proper divisors (73887847114059).

120220012111221 is a wasteful number, since it uses less digits than its factorization.

120220012111221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1871099558 (or 1871099544 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120220012111221 its reverse (122111210022021), we get a palindrome (242331222133242).

The spelling of 120220012111221 in words is "one hundred twenty trillion, two hundred twenty billion, twelve million, one hundred eleven thousand, two hundred twenty-one".