21004213114 has 4 divisors (see below), whose sum is σ = 31506319674. Its totient is φ = 10502106556.

The previous prime is 21004213093. The next prime is 21004213151. The reversal of 21004213114 is 41131240012.

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

It can be written as a sum of positive squares in only one way, i.e., 13892158225 + 7112054889 = 117865^2 + 84333^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21004213091 and 21004213100.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5251053277 + ... + 5251053280.

Almost surely, 2^21004213114 is an apocalyptic number.

21004213114 is a deficient number, since it is larger than the sum of its proper divisors (10502106560).

21004213114 is a wasteful number, since it uses less digits than its factorization.

21004213114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10502106559.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21004213114 its reverse (41131240012), we get a palindrome (62135453126).

The spelling of 21004213114 in words is "twenty-one billion, four million, two hundred thirteen thousand, one hundred fourteen".