11221122001020 has 96 divisors (see below), whose sum is σ = 33416507916288. Its totient is φ = 2803652477952.

The previous prime is 11221122000989. The next prime is 11221122001021. The reversal of 11221122001020 is 2010022112211.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221122001021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24438684 + ... + 24893603.

It is an arithmetic number, because the mean of its divisors is an integer number (348088624128).

Almost surely, 2^{11221122001020} is an apocalyptic number.

11221122001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11221122001020 is an abundant number, since it is smaller than the sum of its proper divisors (22195385915268).

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

11221122001020 is a wasteful number, since it uses less digits than its factorization.

11221122001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49332539 (or 49332537 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11221122001020 its reverse (2010022112211), we get a palindrome (13231144113231).

The spelling of 11221122001020 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-two million, one thousand, twenty".