2122020055660 has 96 divisors (see below), whose sum is σ = 4738567680000. Its totient is φ = 796937944320.

The previous prime is 2122020055657. The next prime is 2122020055681. The reversal of 2122020055660 is 665500202212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 3705241 + ... + 4239439.

It is an arithmetic number, because the mean of its divisors is an integer number (49360080000).

Almost surely, 2^{2122020055660} is an apocalyptic number.

2122020055660 is a gapful number since it is divisible by the number (20) 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 2122020055660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2369283840000).

2122020055660 is an abundant number, since it is smaller than the sum of its proper divisors (2616547624340).

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

2122020055660 is a wasteful number, since it uses less digits than its factorization.

2122020055660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534431 (or 534429 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 2122020055660 its reverse (665500202212), we get a palindrome (2787520257872).

The spelling of 2122020055660 in words is "two trillion, one hundred twenty-two billion, twenty million, fifty-five thousand, six hundred sixty".