1322011000020 has 96 divisors (see below), whose sum is σ = 3751348930560. Its totient is φ = 347818408960.

The previous prime is 1322010999989. The next prime is 1322011000087. The reversal of 1322011000020 is 200001102231.

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

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, 2193229 + ... + 2730251.

It is an arithmetic number, because the mean of its divisors is an integer number (39076551360).

Almost surely, 2^{1322011000020} is an apocalyptic number.

1322011000020 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 1322011000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1875674465280).

1322011000020 is an abundant number, since it is smaller than the sum of its proper divisors (2429337930540).

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

1322011000020 is a wasteful number, since it uses less digits than its factorization.

1322011000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537585 (or 537583 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1322011000020 its reverse (200001102231), we get a palindrome (1522012102251).

The spelling of 1322011000020 in words is "one trillion, three hundred twenty-two billion, eleven million, twenty", and thus it is an aban number.