21023102 has 8 divisors (see below), whose sum is σ = 31676736. Its totient is φ = 10464192.

The previous prime is 21023099. The next prime is 21023111. The reversal of 21023102 is 20132012.

It is a happy number.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23123 + ... + 24014.

It is an arithmetic number, because the mean of its divisors is an integer number (3959592).

Almost surely, 2^21023102 is an apocalyptic number.

21023102 is a deficient number, since it is larger than the sum of its proper divisors (10653634).

21023102 is a wasteful number, since it uses less digits than its factorization.

21023102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47362.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 21023102 is about 4585.0956369524. The cubic root of 21023102 is about 275.9935498738.

Adding to 21023102 its reverse (20132012), we get a palindrome (41155114).

The spelling of 21023102 in words is "twenty-one million, twenty-three thousand, one hundred two".