21361150 has 24 divisors (see below), whose sum is σ = 39990744. Its totient is φ = 8488800.

The previous prime is 21361147. The next prime is 21361169. The reversal of 21361150 is 5116312.

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, 6840 + ... + 9460.

It is an arithmetic number, because the mean of its divisors is an integer number (1666281).

Almost surely, 2^21361150 is an apocalyptic number.

21361150 is a deficient number, since it is larger than the sum of its proper divisors (18629594).

21361150 is a wasteful number, since it uses less digits than its factorization.

21361150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2796 (or 2791 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 21361150 is about 4621.8124150597. The cubic root of 21361150 is about 277.4650011321.

Adding to 21361150 its reverse (5116312), we get a palindrome (26477462).

The spelling of 21361150 in words is "twenty-one million, three hundred sixty-one thousand, one hundred fifty".