1223011197108 has 240 divisors, whose sum is σ = 3421745767440. Its totient is φ = 379566342144.

The previous prime is 1223011197103. The next prime is 1223011197143. The reversal of 1223011197108 is 8017911103221.

It can be written as a sum of positive squares in 8 ways, for example, as 233300592144 + 989710604964 = 483012^2 + 994842^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223011197101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 514517616 + ... + 514519992.

It is an arithmetic number, because the mean of its divisors is an integer number (14257274031).

Almost surely, 2^{1223011197108} is an apocalyptic number.

1223011197108 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223011197108, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1710872883720).

1223011197108 is an abundant number, since it is smaller than the sum of its proper divisors (2198734570332).

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

1223011197108 is a wasteful number, since it uses less digits than its factorization.

1223011197108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376 (or 3365 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 36.

The spelling of 1223011197108 in words is "one trillion, two hundred twenty-three billion, eleven million, one hundred ninety-seven thousand, one hundred eight".