21302150 has 24 divisors (see below), whose sum is σ = 40075560. Its totient is φ = 8423360.

The previous prime is 21302147. The next prime is 21302161. The reversal of 21302150 is 5120312.

It is a happy number.

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, 2057 + ... + 6843.

It is an arithmetic number, because the mean of its divisors is an integer number (1669815).

Almost surely, 2^21302150 is an apocalyptic number.

21302150 is a deficient number, since it is larger than the sum of its proper divisors (18773410).

21302150 is a wasteful number, since it uses less digits than its factorization.

21302150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4888 (or 4883 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 21302150 is about 4615.4252241803. The cubic root of 21302150 is about 277.2093106211.

Adding to 21302150 its reverse (5120312), we get a palindrome (26422462).

The spelling of 21302150 in words is "twenty-one million, three hundred two thousand, one hundred fifty".