2120551320 has 64 divisors (see below), whose sum is σ = 6451280640. Its totient is φ = 557513600.

The previous prime is 2120551267. The next prime is 2120551337. The reversal of 2120551320 is 231550212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115926 + ... + 132965.

It is an arithmetic number, because the mean of its divisors is an integer number (100801260).

Almost surely, 2^2120551320 is an apocalyptic number.

2120551320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120551320 is an abundant number, since it is smaller than the sum of its proper divisors (4330729320).

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

2120551320 is a wasteful number, since it uses less digits than its factorization.

2120551320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248976 (or 248972 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 2120551320 is about 46049.4442963213. Note that the first 3 decimals coincide. The cubic root of 2120551320 is about 1284.7430070427.

The spelling of 2120551320 in words is "two billion, one hundred twenty million, five hundred fifty-one thousand, three hundred twenty".