120001001111 has 4 divisors (see below), whose sum is σ = 120027560400. Its totient is φ = 119974441824.

The previous prime is 120001001101. The next prime is 120001001117. The reversal of 120001001111 is 111100100021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111100100021 = 3061 ⋅36295361.

It is a cyclic number.

It is not a de Polignac number, because 120001001111 - 2⁶ = 120001001047 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 (120001001117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13272866 + ... + 13281903.

It is an arithmetic number, because the mean of its divisors is an integer number (30006890100).

Almost surely, 2^120001001111 is an apocalyptic number.

120001001111 is a deficient number, since it is larger than the sum of its proper divisors (26559289).

120001001111 is an equidigital number, since it uses as much as digits as its factorization.

120001001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26559288.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 120001001111 its reverse (111100100021), we get a palindrome (231101101132).

The spelling of 120001001111 in words is "one hundred twenty billion, one million, one thousand, one hundred eleven".