120221220111111 has 32 divisors (see below), whose sum is σ = 205564493952000. Its totient is φ = 68017663418400.

The previous prime is 120221220111107. The next prime is 120221220111137. The reversal of 120221220111111 is 111111022122021.

It is a happy number.

120221220111111 is a `hidden beast` number, since 1 + 2 + 0 + 221 + 220 + 111 + 111 = 666.

It is not a de Polignac number, because 120221220111111 - 2² = 120221220111107 is a prime.

It is a super-3 number, since 3×120221220111111³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221220111211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3148946811 + ... + 3148984988.

It is an arithmetic number, because the mean of its divisors is an integer number (6423890436000).

Almost surely, 2^{120221220111111} is an apocalyptic number.

120221220111111 is a deficient number, since it is larger than the sum of its proper divisors (85343273840889).

120221220111111 is a wasteful number, since it uses less digits than its factorization.

120221220111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6297931916 (or 6297931910 counting only the distinct ones).

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

Adding to 120221220111111 its reverse (111111022122021), we get a palindrome (231332242233132).

The spelling of 120221220111111 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, one hundred eleven".