21232102 has 4 divisors (see below), whose sum is σ = 31848156. Its totient is φ = 10616050.

The previous prime is 21232097. The next prime is 21232103. The reversal of 21232102 is 20123212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5308024 + ... + 5308027.

It is an arithmetic number, because the mean of its divisors is an integer number (7962039).

Almost surely, 2^21232102 is an apocalyptic number.

21232102 is a deficient number, since it is larger than the sum of its proper divisors (10616054).

21232102 is a wasteful number, since it uses less digits than its factorization.

21232102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10616053.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 21232102 is about 4607.8305090357. The cubic root of 21232102 is about 276.9051272277.

Adding to 21232102 its reverse (20123212), we get a palindrome (41355314).

It can be divided in two parts, 2123210 and 2, that added together give a palindrome (2123212).

The spelling of 21232102 in words is "twenty-one million, two hundred thirty-two thousand, one hundred two".