22061361 has 16 divisors (see below), whose sum is σ = 34527104. Its totient is φ = 12265344.

The previous prime is 22061353. The next prime is 22061363. The reversal of 22061361 is 16316022.

It is a happy number.

It is not a de Polignac number, because 22061361 - 2³ = 22061353 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22061363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13420 + ... + 14973.

It is an arithmetic number, because the mean of its divisors is an integer number (2157944).

Almost surely, 2^22061361 is an apocalyptic number.

22061361 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22061361 is a deficient number, since it is larger than the sum of its proper divisors (12465743).

22061361 is a wasteful number, since it uses less digits than its factorization.

22061361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28440.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 22061361 is about 4696.9523097430. The cubic root of 22061361 is about 280.4642002347.

Adding to 22061361 its reverse (16316022), we get a palindrome (38377383).

It can be divided in two parts, 22061 and 361, that added together give a palindrome (22422).

The spelling of 22061361 in words is "twenty-two million, sixty-one thousand, three hundred sixty-one".