21130414442 has 32 divisors (see below), whose sum is σ = 33303239424. Its totient is φ = 10044486400.

The previous prime is 21130414429. The next prime is 21130414499. The reversal of 21130414442 is 24441403112.

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, 886217 + ... + 909747.

It is an arithmetic number, because the mean of its divisors is an integer number (1040726232).

Almost surely, 2^21130414442 is an apocalyptic number.

21130414442 is a deficient number, since it is larger than the sum of its proper divisors (12172824982).

21130414442 is a wasteful number, since it uses less digits than its factorization.

21130414442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23854.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21130414442 its reverse (24441403112), we get a palindrome (45571817554).

The spelling of 21130414442 in words is "twenty-one billion, one hundred thirty million, four hundred fourteen thousand, four hundred forty-two".