9420222221 has 8 divisors (see below), whose sum is σ = 9845524920. Its totient is φ = 9001617408.

The previous prime is 9420222209. The next prime is 9420222269. The reversal of 9420222221 is 1222220249.

It can be written as a sum of positive squares in 4 ways, for example, as 2821096996 + 6599125225 = 53114^2 + 81235^2 .

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 9420222221 - 2⁶ = 9420222157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9420222281) 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, 1671596 + ... + 1677221.

It is an arithmetic number, because the mean of its divisors is an integer number (1230690615).

Almost surely, 2^9420222221 is an apocalyptic number.

It is an amenable number.

9420222221 is a deficient number, since it is larger than the sum of its proper divisors (425302699).

9420222221 is a wasteful number, since it uses less digits than its factorization.

9420222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348943.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 9420222221 is about 97057.8292617345. The cubic root of 9420222221 is about 2111.9666173707.

The spelling of 9420222221 in words is "nine billion, four hundred twenty million, two hundred twenty-two thousand, two hundred twenty-one".