1311245122002 has 64 divisors (see below), whose sum is σ = 2850156134400. Its totient is φ = 400636938240.

The previous prime is 1311245121937. The next prime is 1311245122003. The reversal of 1311245122002 is 2002215421131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1311245122003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18224274 + ... + 18296082.

It is an arithmetic number, because the mean of its divisors is an integer number (44533689600).

Almost surely, 2^{1311245122002} is an apocalyptic number.

1311245122002 is an abundant number, since it is smaller than the sum of its proper divisors (1538911012398).

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

1311245122002 is a wasteful number, since it uses less digits than its factorization.

1311245122002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77031.

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 1311245122002 in words is "one trillion, three hundred eleven billion, two hundred forty-five million, one hundred twenty-two thousand, two".