2220121120020 has 48 divisors (see below), whose sum is σ = 6217299388608. Its totient is φ = 591940846080.

The previous prime is 2220121119989. The next prime is 2220121120031. The reversal of 2220121120020 is 200211210222.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2465794 + ... + 3243513.

It is an arithmetic number, because the mean of its divisors is an integer number (129527070596).

Almost surely, 2^{2220121120020} is an apocalyptic number.

2220121120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220121120020 is an abundant number, since it is smaller than the sum of its proper divisors (3997178268588).

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

2220121120020 is a wasteful number, since it uses less digits than its factorization.

2220121120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5715800 (or 5715798 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2220121120020 its reverse (200211210222), we get a palindrome (2420332330242).

The spelling of 2220121120020 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty thousand, twenty".