1311222040044 has 24 divisors (see below), whose sum is σ = 3496592107008. Its totient is φ = 374634868560.

The previous prime is 1311222040039. The next prime is 1311222040081. The reversal of 1311222040044 is 4400402221131.

It is a junction number, because it is equal to n+sod(n) for n = 1311222039996 and 1311222040023.

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, 7804893012 + ... + 7804893179.

It is an arithmetic number, because the mean of its divisors is an integer number (145691337792).

Almost surely, 2^{1311222040044} is an apocalyptic number.

1311222040044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1311222040044 is an abundant number, since it is smaller than the sum of its proper divisors (2185370066964).

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

1311222040044 is a wasteful number, since it uses less digits than its factorization.

1311222040044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15609786205 (or 15609786203 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1311222040044 its reverse (4400402221131), we get a palindrome (5711624261175).

The spelling of 1311222040044 in words is "one trillion, three hundred eleven billion, two hundred twenty-two million, forty thousand, forty-four".