1101020645100 has 288 divisors, whose sum is σ = 3412368219456. Its totient is φ = 273118003200.

The previous prime is 1101020645069. The next prime is 1101020645111. The reversal of 1101020645100 is 15460201011.

It is a super-4 number, since 4×1101020645100⁴ (a number of 49 digits) contains 4444 as substring.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 679222290 + ... + 679223910.

It is an arithmetic number, because the mean of its divisors is an integer number (11848500762).

Almost surely, 2^{1101020645100} is an apocalyptic number.

1101020645100 is a gapful number since it is divisible by the number (10) 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 1101020645100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1706184109728).

1101020645100 is an abundant number, since it is smaller than the sum of its proper divisors (2311347574356).

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

1101020645100 is a wasteful number, since it uses less digits than its factorization.

1101020645100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3125 (or 3118 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 1101020645100 its reverse (15460201011), we get a palindrome (1116480846111).

The spelling of 1101020645100 in words is "one trillion, one hundred one billion, twenty million, six hundred forty-five thousand, one hundred".