21293102 has 8 divisors (see below), whose sum is σ = 31963800. Its totient is φ = 10638504.

The previous prime is 21293099. The next prime is 21293117. The reversal of 21293102 is 20139212.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (3995475).

Almost surely, 2^21293102 is an apocalyptic number.

21293102 is a deficient number, since it is larger than the sum of its proper divisors (10670698).

21293102 is a wasteful number, since it uses less digits than its factorization.

21293102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 21293102 is about 4614.4449286994. Note that the first 3 decimals coincide. The cubic root of 21293102 is about 277.1700572274.

The spelling of 21293102 in words is "twenty-one million, two hundred ninety-three thousand, one hundred two".