2120354055420 has 96 divisors (see below), whose sum is σ = 5986718470656. Its totient is φ = 560698195200.

The previous prime is 2120354055419. The next prime is 2120354055433. The reversal of 2120354055420 is 245504530212.

It is a happy number.

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, 10645950 + ... + 10843290.

It is an arithmetic number, because the mean of its divisors is an integer number (62361650736).

Almost surely, 2^{2120354055420} is an apocalyptic number.

2120354055420 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 2120354055420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2993359235328).

2120354055420 is an abundant number, since it is smaller than the sum of its proper divisors (3866364415236).

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

2120354055420 is a wasteful number, since it uses less digits than its factorization.

2120354055420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198851 (or 198849 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 33.

Adding to 2120354055420 its reverse (245504530212), we get a palindrome (2365858585632).

The spelling of 2120354055420 in words is "two trillion, one hundred twenty billion, three hundred fifty-four million, fifty-five thousand, four hundred twenty".