1001102122020 has 768 divisors, whose sum is σ = 3810093686784. Its totient is φ = 189665280000.

The previous prime is 1001102121923. The next prime is 1001102122051. The reversal of 1001102122020 is 202212011001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1001102121987 and 1001102122005.

It is an unprimeable number.

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 255 ways as a sum of consecutive naturals, for example, 2496513820 + ... + 2496514220.

It is an arithmetic number, because the mean of its divisors is an integer number (4961059488).

Almost surely, 2^{1001102122020} is an apocalyptic number.

1001102122020 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 1001102122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1905046843392).

1001102122020 is an abundant number, since it is smaller than the sum of its proper divisors (2808991564764).

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

1001102122020 is a wasteful number, since it uses less digits than its factorization.

1001102122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001102122020 its reverse (202212011001), we get a palindrome (1203314133021).

The spelling of 1001102122020 in words is "one trillion, one billion, one hundred two million, one hundred twenty-two thousand, twenty".