120101020111 has 4 divisors (see below), whose sum is σ = 121290139224. Its totient is φ = 118911901000.

The previous prime is 120101020027. The next prime is 120101020219. The reversal of 120101020111 is 111020101021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120101020111 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 (120101021111) 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, 594559405 + ... + 594559606.

It is an arithmetic number, because the mean of its divisors is an integer number (30322534806).

Almost surely, 2^120101020111 is an apocalyptic number.

120101020111 is a deficient number, since it is larger than the sum of its proper divisors (1189119113).

120101020111 is a wasteful number, since it uses less digits than its factorization.

120101020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189119112.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 120101020111 its reverse (111020101021), we get a palindrome (231121121132).

The spelling of 120101020111 in words is "one hundred twenty billion, one hundred one million, twenty thousand, one hundred eleven".