21122035 has 16 divisors (see below), whose sum is σ = 28242432. Its totient is φ = 15032800.

The previous prime is 21122033. The next prime is 21122069. The reversal of 21122035 is 53022112.

It is not a de Polignac number, because 21122035 - 2¹ = 21122033 is a prime.

It is a super-2 number, since 2×21122035² = 892280725082450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21122033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501 + ... + 6670.

It is an arithmetic number, because the mean of its divisors is an integer number (1765152).

Almost surely, 2^21122035 is an apocalyptic number.

21122035 is a deficient number, since it is larger than the sum of its proper divisors (7120397).

21122035 is a wasteful number, since it uses less digits than its factorization.

21122035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8234.

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

The square root of 21122035 is about 4595.8715169160. The cubic root of 21122035 is about 276.4258068896.

Adding to 21122035 its reverse (53022112), we get a palindrome (74144147).

The spelling of 21122035 in words is "twenty-one million, one hundred twenty-two thousand, thirty-five".