30220421 has 8 divisors (see below), whose sum is σ = 37677504. Its totient is φ = 23548320.

The previous prime is 30220397. The next prime is 30220429. The reversal of 30220421 is 12402203.

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 30220421 - 2¹⁸ = 29958277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30220396 and 30220405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30220429) 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, 196160 + ... + 196313.

It is an arithmetic number, because the mean of its divisors is an integer number (4709688).

Almost surely, 2^30220421 is an apocalyptic number.

It is an amenable number.

30220421 is a deficient number, since it is larger than the sum of its proper divisors (7457083).

30220421 is a wasteful number, since it uses less digits than its factorization.

30220421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392491.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 30220421 is about 5497.3103423402. The cubic root of 30220421 is about 311.4823936039.

Adding to 30220421 its reverse (12402203), we get a palindrome (42622624).

The spelling of 30220421 in words is "thirty million, two hundred twenty thousand, four hundred twenty-one".