213111311012 has 24 divisors (see below), whose sum is σ = 380472424416. Its totient is φ = 104421385728.

The previous prime is 213111310931. The next prime is 213111311047. The reversal of 213111311012 is 210113111312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2008358 + ... + 2111805.

It is an arithmetic number, because the mean of its divisors is an integer number (15853017684).

Almost surely, 2^213111311012 is an apocalyptic number.

It is an amenable number.

213111311012 is a deficient number, since it is larger than the sum of its proper divisors (167361113404).

213111311012 is a wasteful number, since it uses less digits than its factorization.

213111311012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120427 (or 4120425 counting only the distinct ones).

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

Adding to 213111311012 its reverse (210113111312), we get a palindrome (423224422324).

The spelling of 213111311012 in words is "two hundred thirteen billion, one hundred eleven million, three hundred eleven thousand, twelve".