1211033313012 has 24 divisors (see below), whose sum is σ = 2830693177312. Its totient is φ = 402970802400.

The previous prime is 1211033312963. The next prime is 1211033313013. The reversal of 1211033313012 is 2103133301121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211033313012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211033313013) 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, 88363939 + ... + 88377642.

Almost surely, 2^{1211033313012} is an apocalyptic number.

1211033313012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211033313012 is an abundant number, since it is smaller than the sum of its proper divisors (1619659864300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1211033313012 is a wasteful number, since it uses less digits than its factorization.

1211033313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176742159 (or 176742157 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1211033313012 its reverse (2103133301121), we get a palindrome (3314166614133).

The spelling of 1211033313012 in words is "one trillion, two hundred eleven billion, thirty-three million, three hundred thirteen thousand, twelve".