222000203021 has 2 divisors, whose sum is σ = 222000203022. Its totient is φ = 222000203020.

The previous prime is 222000202987. The next prime is 222000203023. The reversal of 222000203021 is 120302000222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163955347396 + 58044855625 = 404914^2 + 240925^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000203021 - 2²⁶ = 221933094157 is a prime.

Together with 222000203023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222000202987 and 222000203005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222000203023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000101510 + 111000101511.

It is an arithmetic number, because the mean of its divisors is an integer number (111000101511).

Almost surely, 2^222000203021 is an apocalyptic number.

It is an amenable number.

222000203021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222000203021 is an equidigital number, since it uses as much as digits as its factorization.

222000203021 is an evil number, because the sum of its binary digits is even.

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

Adding to 222000203021 its reverse (120302000222), we get a palindrome (342302203243).

The spelling of 222000203021 in words is "two hundred twenty-two billion, two hundred three thousand, twenty-one".