21101313404 has 6 divisors (see below), whose sum is σ = 36927298464. Its totient is φ = 10550656700.

The previous prime is 21101313403. The next prime is 21101313419. The reversal of 21101313404 is 40431310112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101313403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2637664172 + ... + 2637664179.

It is an arithmetic number, because the mean of its divisors is an integer number (6154549744).

Almost surely, 2^21101313404 is an apocalyptic number.

It is an amenable number.

21101313404 is a deficient number, since it is larger than the sum of its proper divisors (15825985060).

21101313404 is a wasteful number, since it uses less digits than its factorization.

21101313404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275328355 (or 5275328353 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21101313404 its reverse (40431310112), we get a palindrome (61532623516).

The spelling of 21101313404 in words is "twenty-one billion, one hundred one million, three hundred thirteen thousand, four hundred four".