1211404013312 has 18 divisors (see below), whose sum is σ = 2418075980208. Its totient is φ = 605702006528.

The previous prime is 1211404013293. The next prime is 1211404013359. The reversal of 1211404013312 is 2133104041121.

It is a super-3 number, since 3×1211404013312³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2366023208 + ... + 2366023719.

It is an arithmetic number, because the mean of its divisors is an integer number (134337554456).

Almost surely, 2^{1211404013312} is an apocalyptic number.

It is an amenable number.

1211404013312 is a deficient number, since it is larger than the sum of its proper divisors (1206671966896).

1211404013312 is an frugal number, since it uses more digits than its factorization.

1211404013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732046943 (or 4732046929 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 1211404013312 its reverse (2133104041121), we get a palindrome (3344508054433).

The spelling of 1211404013312 in words is "one trillion, two hundred eleven billion, four hundred four million, thirteen thousand, three hundred twelve".