120121101201111 has 16 divisors (see below), whose sum is σ = 162576982374528. Its totient is φ = 78873345381600.

The previous prime is 120121101201091. The next prime is 120121101201121. The reversal of 120121101201111 is 111102101121021.

It is not a de Polignac number, because 120121101201111 - 2⁶ = 120121101201047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121101201121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44729620 + ... + 47339001.

It is an arithmetic number, because the mean of its divisors is an integer number (10161061398408).

Almost surely, 2^{120121101201111} is an apocalyptic number.

120121101201111 is a deficient number, since it is larger than the sum of its proper divisors (42455881173417).

120121101201111 is an equidigital number, since it uses as much as digits as its factorization.

120121101201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92075182.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 120121101201111 its reverse (111102101121021), we get a palindrome (231223202322132).

The spelling of 120121101201111 in words is "one hundred twenty trillion, one hundred twenty-one billion, one hundred one million, two hundred one thousand, one hundred eleven".