2120202120 has 64 divisors (see below), whose sum is σ = 6532528320. Its totient is φ = 550105344.

The previous prime is 2120202053. The next prime is 2120202143. The reversal of 2120202120 is 212020212.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2120202096 and 2120202105.

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, 234322 + ... + 243201.

It is an arithmetic number, because the mean of its divisors is an integer number (102070755).

Almost surely, 2^2120202120 is an apocalyptic number.

2120202120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120202120 is an abundant number, since it is smaller than the sum of its proper divisors (4412326200).

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

2120202120 is a wasteful number, since it uses less digits than its factorization.

2120202120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477574 (or 477570 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 2120202120 is about 46045.6525635157. The cubic root of 2120202120 is about 1284.6724818476.

Adding to 2120202120 its reverse (212020212), we get a palindrome (2332222332).

The spelling of 2120202120 in words is "two billion, one hundred twenty million, two hundred two thousand, one hundred twenty".