222021011 has 2 divisors, whose sum is σ = 222021012. Its totient is φ = 222021010.

The previous prime is 222020999. The next prime is 222021017. The reversal of 222021011 is 110120222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222021011 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 222020983 and 222021001.

It is not a weakly prime, because it can be changed into another prime (222021017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010505 + 111010506.

It is an arithmetic number, because the mean of its divisors is an integer number (111010506).

Almost surely, 2^222021011 is an apocalyptic number.

222021011 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021011 is an equidigital number, since it uses as much as digits as its factorization.

222021011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 222021011 is about 14900.3694920629. The cubic root of 222021011 is about 605.5239965460.

Adding to 222021011 its reverse (110120222), we get a palindrome (332141233).

The spelling of 222021011 in words is "two hundred twenty-two million, twenty-one thousand, eleven".