1211402033012 has 48 divisors (see below), whose sum is σ = 2141799791040. Its totient is φ = 599494252032.

The previous prime is 1211402032999. The next prime is 1211402033021. The reversal of 1211402033012 is 2103302041121.

It is a super-3 number, since 3×1211402033012³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181534508 + ... + 181541180.

It is an arithmetic number, because the mean of its divisors is an integer number (44620828980).

Almost surely, 2^{1211402033012} is an apocalyptic number.

It is an amenable number.

1211402033012 is a deficient number, since it is larger than the sum of its proper divisors (930397758028).

1211402033012 is a wasteful number, since it uses less digits than its factorization.

1211402033012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7920 (or 7918 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1211402033012 its reverse (2103302041121), we get a palindrome (3314704074133).

The spelling of 1211402033012 in words is "one trillion, two hundred eleven billion, four hundred two million, thirty-three thousand, twelve".