222301220021 has 4 divisors (see below), whose sum is σ = 222302791200. Its totient is φ = 222299648844.

The previous prime is 222301220017. The next prime is 222301220023. The reversal of 222301220021 is 120022103222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222301220021 - 2² = 222301220017 is a prime.

It is a super-3 number, since 3×222301220021³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222301220023) 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, 549761 + ... + 864198.

It is an arithmetic number, because the mean of its divisors is an integer number (55575697800).

Almost surely, 2^222301220021 is an apocalyptic number.

It is an amenable number.

222301220021 is a deficient number, since it is larger than the sum of its proper divisors (1571179).

222301220021 is a wasteful number, since it uses less digits than its factorization.

222301220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571178.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 222301220021 its reverse (120022103222), we get a palindrome (342323323243).

The spelling of 222301220021 in words is "two hundred twenty-two billion, three hundred one million, two hundred twenty thousand, twenty-one".