1145303212122 has 32 divisors (see below), whose sum is σ = 2547544608000. Its totient is φ = 381403783584.

The previous prime is 1145303212087. The next prime is 1145303212129. The reversal of 1145303212122 is 2212123035411.

It is a happy number.

1145303212122 is a `hidden beast` number, since 1 + 1 + 4 + 530 + 3 + 2 + 1 + 2 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1145303212129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10052658 + ... + 10165949.

It is an arithmetic number, because the mean of its divisors is an integer number (79610769000).

Almost surely, 2^{1145303212122} is an apocalyptic number.

1145303212122 is an abundant number, since it is smaller than the sum of its proper divisors (1402241395878).

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

1145303212122 is a wasteful number, since it uses less digits than its factorization.

1145303212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20219667 (or 20219661 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 1145303212122 its reverse (2212123035411), we get a palindrome (3357426247533).

The spelling of 1145303212122 in words is "one trillion, one hundred forty-five billion, three hundred three million, two hundred twelve thousand, one hundred twenty-two".