1001122201020 has 96 divisors (see below), whose sum is σ = 2815619788800. Its totient is φ = 265780134144.

The previous prime is 1001122201007. The next prime is 1001122201043. The reversal of 1001122201020 is 201022211001.

It is a super-2 number, since 2×1001122201020² (a number of 25 digits) contains 22 as substring.

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 = 1001122200987 and 1001122201005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12626661 + ... + 12705699.

It is an arithmetic number, because the mean of its divisors is an integer number (29329372800).

Almost surely, 2^{1001122201020} is an apocalyptic number.

1001122201020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001122201020 is an abundant number, since it is smaller than the sum of its proper divisors (1814497587780).

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

1001122201020 is a wasteful number, since it uses less digits than its factorization.

1001122201020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79987 (or 79985 counting only the distinct ones).

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

Adding to 1001122201020 its reverse (201022211001), we get a palindrome (1202144412021).

The spelling of 1001122201020 in words is "one trillion, one billion, one hundred twenty-two million, two hundred one thousand, twenty".