222021101077 has 2 divisors, whose sum is σ = 222021101078. Its totient is φ = 222021101076.

The previous prime is 222021101051. The next prime is 222021101117. The reversal of 222021101077 is 770101120222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166667246001 + 55353855076 = 408249^2 + 235274^2 .

It is a cyclic number.

It is not a de Polignac number, because 222021101077 - 2²³ = 222012712469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222021101047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111010550538 + 111010550539.

It is an arithmetic number, because the mean of its divisors is an integer number (111010550539).

Almost surely, 2^222021101077 is an apocalyptic number.

It is an amenable number.

222021101077 is a deficient number, since it is larger than the sum of its proper divisors (1).

222021101077 is an equidigital number, since it uses as much as digits as its factorization.

222021101077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 784, while the sum is 25.

Adding to 222021101077 its reverse (770101120222), we get a palindrome (992122221299).

The spelling of 222021101077 in words is "two hundred twenty-two billion, twenty-one million, one hundred one thousand, seventy-seven".