11220121012020 has 48 divisors (see below), whose sum is σ = 31447849872768. Its totient is φ = 2989031218560.

The previous prime is 11220121012003. The next prime is 11220121012021. The reversal of 11220121012020 is 2021012102211.

It is a super-2 number, since 2×11220121012020² (a number of 27 digits) contains 22 as substring.

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 (11220121012021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93722536 + ... + 93842175.

It is an arithmetic number, because the mean of its divisors is an integer number (655163539016).

Almost surely, 2^{11220121012020} is an apocalyptic number.

11220121012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220121012020 is an abundant number, since it is smaller than the sum of its proper divisors (20227728860748).

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

11220121012020 is a wasteful number, since it uses less digits than its factorization.

11220121012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187565720 (or 187565718 counting only the distinct ones).

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

Adding to 11220121012020 its reverse (2021012102211), we get a palindrome (13241133114231).

The spelling of 11220121012020 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, twelve thousand, twenty".