1211302312044 has 24 divisors (see below), whose sum is σ = 3083314976448. Its totient is φ = 367061306640.

The previous prime is 1211302312039. The next prime is 1211302312049. The reversal of 1211302312044 is 4402132031121.

It is an interprime number because it is at equal distance from previous prime (1211302312039) and next prime (1211302312049).

It is not an unprimeable number, because it can be changed into a prime (1211302312049) 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, 4588266202 + ... + 4588266465.

It is an arithmetic number, because the mean of its divisors is an integer number (128471457352).

Almost surely, 2^{1211302312044} is an apocalyptic number.

It is an amenable number.

1211302312044 is an abundant number, since it is smaller than the sum of its proper divisors (1872012664404).

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

1211302312044 is a wasteful number, since it uses less digits than its factorization.

1211302312044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9176532685 (or 9176532683 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 1211302312044 its reverse (4402132031121), we get a palindrome (5613434343165).

The spelling of 1211302312044 in words is "one trillion, two hundred eleven billion, three hundred two million, three hundred twelve thousand, forty-four".