120021211001111 has 16 divisors (see below), whose sum is σ = 138668088619008. Its totient is φ = 101755428984000.

The previous prime is 120021211001099. The next prime is 120021211001119. The reversal of 120021211001111 is 111100112120021.

It is a cyclic number.

It is not a de Polignac number, because 120021211001111 - 2¹⁸ = 120021210738967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021211001119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243420935 + ... + 243913496.

It is an arithmetic number, because the mean of its divisors is an integer number (8666755538688).

Almost surely, 2^{120021211001111} is an apocalyptic number.

120021211001111 is a deficient number, since it is larger than the sum of its proper divisors (18646877617897).

120021211001111 is a wasteful number, since it uses less digits than its factorization.

120021211001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487334822.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 120021211001111 its reverse (111100112120021), we get a palindrome (231121323121132).

The spelling of 120021211001111 in words is "one hundred twenty trillion, twenty-one billion, two hundred eleven million, one thousand, one hundred eleven".