2120211205 has 16 divisors (see below), whose sum is σ = 2962583424. Its totient is φ = 1426426560.

The previous prime is 2120211169. The next prime is 2120211239. The reversal of 2120211205 is 5021120212.

It is a happy number.

It is not a de Polignac number, because 2120211205 - 2⁷ = 2120211077 is a prime.

It is a Duffinian number.

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, 569631 + ... + 573340.

It is an arithmetic number, because the mean of its divisors is an integer number (185161464).

Almost surely, 2^2120211205 is an apocalyptic number.

It is an amenable number.

2120211205 is a deficient number, since it is larger than the sum of its proper divisors (842372219).

2120211205 is a wasteful number, since it uses less digits than its factorization.

2120211205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143036.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 2120211205 is about 46045.7512155030. The cubic root of 2120211205 is about 1284.6743167722.

Adding to 2120211205 its reverse (5021120212), we get a palindrome (7141331417).

The spelling of 2120211205 in words is "two billion, one hundred twenty million, two hundred eleven thousand, two hundred five".