22120321 has 8 divisors (see below), whose sum is σ = 22407840. Its totient is φ = 21834912.

The previous prime is 22120303. The next prime is 22120331. The reversal of 22120321 is 12302122.

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 22120321 - 2⁷ = 22120193 is a prime.

It is a super-2 number, since 2×22120321² = 978617202286082, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32046 + ... + 32728.

It is an arithmetic number, because the mean of its divisors is an integer number (2800980).

Almost surely, 2^22120321 is an apocalyptic number.

It is an amenable number.

22120321 is a deficient number, since it is larger than the sum of its proper divisors (287519).

22120321 is a wasteful number, since it uses less digits than its factorization.

22120321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 22120321 is about 4703.2245321694. The cubic root of 22120321 is about 280.7138291350.

Adding to 22120321 its reverse (12302122), we get a palindrome (34422443).

The spelling of 22120321 in words is "twenty-two million, one hundred twenty thousand, three hundred twenty-one".