21122350 has 24 divisors (see below), whose sum is σ = 39481848. Its totient is φ = 8407200.

The previous prime is 21122323. The next prime is 21122351. The reversal of 21122350 is 5322112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10420 + ... + 12280.

It is an arithmetic number, because the mean of its divisors is an integer number (1645077).

Almost surely, 2^21122350 is an apocalyptic number.

21122350 is a deficient number, since it is larger than the sum of its proper divisors (18359498).

21122350 is a wasteful number, since it uses less digits than its factorization.

21122350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100 (or 2095 counting only the distinct ones).

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

The square root of 21122350 is about 4595.9057866758. The cubic root of 21122350 is about 276.4271810264.

Adding to 21122350 its reverse (5322112), we get a palindrome (26444462).

The spelling of 21122350 in words is "twenty-one million, one hundred twenty-two thousand, three hundred fifty".