2021511214 has 4 divisors (see below), whose sum is σ = 3032266824. Its totient is φ = 1010755606.

The previous prime is 2021511211. The next prime is 2021511223. The reversal of 2021511214 is 4121151202.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 2021511191 and 2021511200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021511211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505377802 + ... + 505377805.

It is an arithmetic number, because the mean of its divisors is an integer number (758066706).

Almost surely, 2^2021511214 is an apocalyptic number.

2021511214 is a deficient number, since it is larger than the sum of its proper divisors (1010755610).

2021511214 is a wasteful number, since it uses less digits than its factorization.

2021511214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010755609.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 2021511214 is about 44961.2190003785. The cubic root of 2021511214 is about 1264.4220232460.

Adding to 2021511214 its reverse (4121151202), we get a palindrome (6142662416).

The spelling of 2021511214 in words is "two billion, twenty-one million, five hundred eleven thousand, two hundred fourteen".