120101001111 has 288 divisors, whose sum is σ = 236148756480. Its totient is φ = 58141214208.

The previous prime is 120101001101. The next prime is 120101001113. The reversal of 120101001111 is 111100101021.

It is not a de Polignac number, because 120101001111 - 2⁶ = 120101001047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120101001093 and 120101001102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120101001113) by changing a digit.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 502514530 + ... + 502514768.

It is an arithmetic number, because the mean of its divisors is an integer number (819960960).

Almost surely, 2^120101001111 is an apocalyptic number.

120101001111 is a deficient number, since it is larger than the sum of its proper divisors (116047755369).

120101001111 is a wasteful number, since it uses less digits than its factorization.

120101001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435 (or 425 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 120101001111 its reverse (111100101021), we get a palindrome (231201102132).

The spelling of 120101001111 in words is "one hundred twenty billion, one hundred one million, one thousand, one hundred eleven".