22121011 has 8 divisors (see below), whose sum is σ = 24910848. Its totient is φ = 19461000.

The previous prime is 22121003. The next prime is 22121041. The reversal of 22121011 is 11012122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22121011 - 2³ = 22121003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121041) 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 7 ways as a sum of consecutive naturals, for example, 32095 + ... + 32776.

It is an arithmetic number, because the mean of its divisors is an integer number (3113856).

Almost surely, 2^22121011 is an apocalyptic number.

22121011 is a deficient number, since it is larger than the sum of its proper divisors (2789837).

22121011 is a wasteful number, since it uses less digits than its factorization.

22121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64913.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 22121011 is about 4703.2978855267. The cubic root of 22121011 is about 280.7167478770.

Adding to 22121011 its reverse (11012122), we get a palindrome (33133133).

Subtracting from 22121011 its reverse (11012122), we obtain a square (11108889 = 3333²).

It can be divided in two parts, 2212 and 1011, that added together give a palindrome (3223).

The spelling of 22121011 in words is "twenty-two million, one hundred twenty-one thousand, eleven".