21322150 has 24 divisors (see below), whose sum is σ = 41385744. Its totient is φ = 8157600.

The previous prime is 21322139. The next prime is 21322181. The reversal of 21322150 is 5122312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8121 + ... + 10420.

It is an arithmetic number, because the mean of its divisors is an integer number (1724406).

Almost surely, 2^21322150 is an apocalyptic number.

21322150 is a deficient number, since it is larger than the sum of its proper divisors (20063594).

21322150 is a wasteful number, since it uses less digits than its factorization.

21322150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18576 (or 18571 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 21322150 is about 4617.5913634708. The cubic root of 21322150 is about 277.2960382053.

Adding to 21322150 its reverse (5122312), we get a palindrome (26444462).

The spelling of 21322150 in words is "twenty-one million, three hundred twenty-two thousand, one hundred fifty".