2111203020 has 24 divisors (see below), whose sum is σ = 5911368624. Its totient is φ = 562987456.

The previous prime is 2111203001. The next prime is 2111203033. The reversal of 2111203020 is 203021112.

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 = 2111202987 and 2111203005.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17593299 + ... + 17593418.

It is an arithmetic number, because the mean of its divisors is an integer number (246307026).

Almost surely, 2^2111203020 is an apocalyptic number.

2111203020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111203020 is an abundant number, since it is smaller than the sum of its proper divisors (3800165604).

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

2111203020 is a wasteful number, since it uses less digits than its factorization.

2111203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35186729 (or 35186727 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2111203020 is about 45947.8293284895. The cubic root of 2111203020 is about 1282.8523265482.

Adding to 2111203020 its reverse (203021112), we get a palindrome (2314224132).

The spelling of 2111203020 in words is "two billion, one hundred eleven million, two hundred three thousand, twenty".