21132034 has 24 divisors (see below), whose sum is σ = 40227408. Its totient is φ = 8232840.

The previous prime is 21132011. The next prime is 21132061. The reversal of 21132034 is 43023112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21131999 and 21132017.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8724 + ... + 10879.

It is an arithmetic number, because the mean of its divisors is an integer number (1676142).

Almost surely, 2^21132034 is an apocalyptic number.

21132034 is a deficient number, since it is larger than the sum of its proper divisors (19095374).

21132034 is a wasteful number, since it uses less digits than its factorization.

21132034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19630 (or 19623 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 21132034 is about 4596.9592123490. The cubic root of 21132034 is about 276.4694192532.

Adding to 21132034 its reverse (43023112), we get a palindrome (64155146).

The spelling of 21132034 in words is "twenty-one million, one hundred thirty-two thousand, thirty-four".