1210331112011 has 6 divisors (see below), whose sum is σ = 1407936191580. Its totient is φ = 1037426667396.

The previous prime is 1210331111981. The next prime is 1210331112047. The reversal of 1210331112011 is 1102111330121.

It is not a de Polignac number, because 1210331112011 - 2¹⁰ = 1210331110987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210331112511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12350317421 + ... + 12350317518.

It is an arithmetic number, because the mean of its divisors is an integer number (234656031930).

Almost surely, 2^{1210331112011} is an apocalyptic number.

1210331112011 is a deficient number, since it is larger than the sum of its proper divisors (197605079569).

1210331112011 is an equidigital number, since it uses as much as digits as its factorization.

1210331112011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24700634953 (or 24700634946 counting only the distinct ones).

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

Adding to 1210331112011 its reverse (1102111330121), we get a palindrome (2312442442132).

The spelling of 1210331112011 in words is "one trillion, two hundred ten billion, three hundred thirty-one million, one hundred twelve thousand, eleven".