21106302 has 32 divisors (see below), whose sum is σ = 50784000. Its totient is φ = 5712768.

The previous prime is 21106301. The next prime is 21106303. The reversal of 21106302 is 20360112.

It is an interprime number because it is at equal distance from previous prime (21106301) and next prime (21106303).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21106301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12427 + ... + 14022.

It is an arithmetic number, because the mean of its divisors is an integer number (1587000).

Almost surely, 2^21106302 is an apocalyptic number.

21106302 is an abundant number, since it is smaller than the sum of its proper divisors (29677698).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21106302 is a wasteful number, since it uses less digits than its factorization.

21106302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26480.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 21106302 is about 4594.1595531718. The cubic root of 21106302 is about 276.3571568208.

Adding to 21106302 its reverse (20360112), we get a palindrome (41466414).

The spelling of 21106302 in words is "twenty-one million, one hundred six thousand, three hundred two".