222210222021 has 16 divisors (see below), whose sum is σ = 340552065600. Its totient is φ = 143031866544.

The previous prime is 222210222001. The next prime is 222210222041. The reversal of 222210222021 is 120222012222.

It is an interprime number because it is at equal distance from previous prime (222210222001) and next prime (222210222041).

It is not a de Polignac number, because 222210222021 - 2¹⁰ = 222210220997 is a prime.

It is a super-2 number, since 2×222210222021² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222210221985 and 222210222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222210222001) 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, 141895911 + ... + 141897476.

It is an arithmetic number, because the mean of its divisors is an integer number (21284504100).

Almost surely, 2^222210222021 is an apocalyptic number.

It is an amenable number.

222210222021 is a deficient number, since it is larger than the sum of its proper divisors (118341843579).

222210222021 is a wasteful number, since it uses less digits than its factorization.

222210222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283793425 (or 283793419 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222210222021 its reverse (120222012222), we get a palindrome (342432234243).

The spelling of 222210222021 in words is "two hundred twenty-two billion, two hundred ten million, two hundred twenty-two thousand, twenty-one".