21031022134 has 8 divisors (see below), whose sum is σ = 32280173640. Its totient is φ = 10270964256.

The previous prime is 21031022093. The next prime is 21031022153. The reversal of 21031022134 is 43122013012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122273299 + ... + 122273470.

It is an arithmetic number, because the mean of its divisors is an integer number (4035021705).

Almost surely, 2^21031022134 is an apocalyptic number.

21031022134 is a deficient number, since it is larger than the sum of its proper divisors (11249151506).

21031022134 is a wasteful number, since it uses less digits than its factorization.

21031022134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244546814.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21031022134 its reverse (43122013012), we get a palindrome (64153035146).

The spelling of 21031022134 in words is "twenty-one billion, thirty-one million, twenty-two thousand, one hundred thirty-four".