2120222520 has 128 divisors (see below), whose sum is σ = 7611105600. Its totient is φ = 521897472.

The previous prime is 2120222513. The next prime is 2120222539. The reversal of 2120222520 is 252220212.

2120222520 is a `hidden beast` number, since 2 + 120 + 2 + 22 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 2120222493 and 2120222502.

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, 61467 + ... + 89546.

Almost surely, 2^2120222520 is an apocalyptic number.

2120222520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120222520 is an abundant number, since it is smaller than the sum of its proper divisors (5490883080).

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

2120222520 is a wasteful number, since it uses less digits than its factorization.

2120222520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151046 (or 151036 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 2120222520 is about 46045.8740822671. The cubic root of 2120222520 is about 1284.6766020892.

Adding to 2120222520 its reverse (252220212), we get a palindrome (2372442732).

The spelling of 2120222520 in words is "two billion, one hundred twenty million, two hundred twenty-two thousand, five hundred twenty".