1210120111011 has 8 divisors (see below), whose sum is σ = 1843992550144. Its totient is φ = 691497206280.

The previous prime is 1210120111001. The next prime is 1210120111037. The reversal of 1210120111011 is 1101110210121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1210120111011 - 2²¹ = 1210118013859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210120111001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28812383575 + ... + 28812383616.

It is an arithmetic number, because the mean of its divisors is an integer number (230499068768).

Almost surely, 2^{1210120111011} is an apocalyptic number.

1210120111011 is a deficient number, since it is larger than the sum of its proper divisors (633872439133).

1210120111011 is an equidigital number, since it uses as much as digits as its factorization.

1210120111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57624767201.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 1210120111011 its reverse (1101110210121), we get a palindrome (2311230321132).

The spelling of 1210120111011 in words is "one trillion, two hundred ten billion, one hundred twenty million, one hundred eleven thousand, eleven".