22421011 has 4 divisors (see below), whose sum is σ = 23739912. Its totient is φ = 21102112.

The previous prime is 22420999. The next prime is 22421023. The reversal of 22421011 is 11012422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22420999) and next prime (22421023).

It is a cyclic number.

It is not a de Polignac number, because 22421011 - 2¹⁵ = 22388243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22420982 and 22421000.

It is not an unprimeable number, because it can be changed into a prime (22421041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659425 + ... + 659458.

It is an arithmetic number, because the mean of its divisors is an integer number (5934978).

Almost surely, 2^22421011 is an apocalyptic number.

22421011 is a deficient number, since it is larger than the sum of its proper divisors (1318901).

22421011 is a wasteful number, since it uses less digits than its factorization.

22421011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1318900.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 22421011 is about 4735.0829982166. The cubic root of 22421011 is about 281.9800591168.

Adding to 22421011 its reverse (11012422), we get a palindrome (33433433).

The spelling of 22421011 in words is "twenty-two million, four hundred twenty-one thousand, eleven".