1211242103344 has 80 divisors (see below), whose sum is σ = 2955517556992. Its totient is φ = 468029124864.

The previous prime is 1211242103327. The next prime is 1211242103369. The reversal of 1211242103344 is 4433012421121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9610614 + ... + 9735829.

Almost surely, 2^{1211242103344} is an apocalyptic number.

1211242103344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1211242103344 is an abundant number, since it is smaller than the sum of its proper divisors (1744275453648).

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

1211242103344 is a wasteful number, since it uses less digits than its factorization.

1211242103344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19346514 (or 19346508 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1211242103344 its reverse (4433012421121), we get a palindrome (5644254524465).

The spelling of 1211242103344 in words is "one trillion, two hundred eleven billion, two hundred forty-two million, one hundred three thousand, three hundred forty-four".