21032112134 has 96 divisors (see below), whose sum is σ = 37647620640. Its totient is φ = 8727488000.

The previous prime is 21032112133. The next prime is 21032112209. The reversal of 21032112134 is 43121123012.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21032112133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34087394 + ... + 34088010.

It is an arithmetic number, because the mean of its divisors is an integer number (392162715).

Almost surely, 2^21032112134 is an apocalyptic number.

21032112134 is a deficient number, since it is larger than the sum of its proper divisors (16615508506).

21032112134 is a wasteful number, since it uses less digits than its factorization.

21032112134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806 (or 783 counting only the distinct ones).

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

Adding to 21032112134 its reverse (43121123012), we get a palindrome (64153235146).

The spelling of 21032112134 in words is "twenty-one billion, thirty-two million, one hundred twelve thousand, one hundred thirty-four".