21146102 has 4 divisors (see below), whose sum is σ = 31719156. Its totient is φ = 10573050.

The previous prime is 21146101. The next prime is 21146137. The reversal of 21146102 is 20164112.

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 (21146101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5286524 + ... + 5286527.

It is an arithmetic number, because the mean of its divisors is an integer number (7929789).

Almost surely, 2^21146102 is an apocalyptic number.

21146102 is a deficient number, since it is larger than the sum of its proper divisors (10573054).

21146102 is a wasteful number, since it uses less digits than its factorization.

21146102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10573053.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 21146102 is about 4598.4890996935. The cubic root of 21146102 is about 276.5307559744.

The spelling of 21146102 in words is "twenty-one million, one hundred forty-six thousand, one hundred two".