120213311111 has 4 divisors (see below), whose sum is σ = 120214028424. Its totient is φ = 120212593800.

The previous prime is 120213311051. The next prime is 120213311143. The reversal of 120213311111 is 111113312021.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120213311111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120213311111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120213311311) 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, 41681 + ... + 492101.

It is an arithmetic number, because the mean of its divisors is an integer number (30053507106).

Almost surely, 2^120213311111 is an apocalyptic number.

120213311111 is a deficient number, since it is larger than the sum of its proper divisors (717313).

120213311111 is an equidigital number, since it uses as much as digits as its factorization.

120213311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717312.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 120213311111 its reverse (111113312021), we get a palindrome (231326623132).

The spelling of 120213311111 in words is "one hundred twenty billion, two hundred thirteen million, three hundred eleven thousand, one hundred eleven".