2051320120 has 16 divisors (see below), whose sum is σ = 4615470360. Its totient is φ = 820528032.

The previous prime is 2051320097. The next prime is 2051320121. The reversal of 2051320120 is 210231502.

It is a junction number, because it is equal to n+sod(n) for n = 2051320094 and 2051320103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051320121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25641462 + ... + 25641541.

Almost surely, 2^2051320120 is an apocalyptic number.

2051320120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2051320120 is an abundant number, since it is smaller than the sum of its proper divisors (2564150240).

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

2051320120 is a wasteful number, since it uses less digits than its factorization.

2051320120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51283014 (or 51283010 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2051320120 is about 45291.5016311007. The cubic root of 2051320120 is about 1270.6067161218.

Adding to 2051320120 its reverse (210231502), we get a palindrome (2261551622).

The spelling of 2051320120 in words is "two billion, fifty-one million, three hundred twenty thousand, one hundred twenty".