21232100134 has 12 divisors (see below), whose sum is σ = 37047848364. Its totient is φ = 9099471444.

The previous prime is 21232100111. The next prime is 21232100159. The reversal of 21232100134 is 43100123212.

It is a happy number.

It is a super-2 number, since 2×21232100134² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108326944 + ... + 108327139.

It is an arithmetic number, because the mean of its divisors is an integer number (3087320697).

Almost surely, 2^21232100134 is an apocalyptic number.

21232100134 is a deficient number, since it is larger than the sum of its proper divisors (15815748230).

21232100134 is a wasteful number, since it uses less digits than its factorization.

21232100134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216654099 (or 216654092 counting only the distinct ones).

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

Adding to 21232100134 its reverse (43100123212), we get a palindrome (64332223346).

The spelling of 21232100134 in words is "twenty-one billion, two hundred thirty-two million, one hundred thousand, one hundred thirty-four".