222221110220077 has 2 divisors, whose sum is σ = 222221110220078. Its totient is φ = 222221110220076.

The previous prime is 222221110220009. The next prime is 222221110220101. The reversal of 222221110220077 is 770022011122222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183693404649316 + 38527705570761 = 13553354^2 + 6207069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222221110220077 is a prime.

It is a super-2 number, since 2×222221110220077² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222221110220477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111110555110038 + 111110555110039.

It is an arithmetic number, because the mean of its divisors is an integer number (111110555110039).

Almost surely, 2^{222221110220077} is an apocalyptic number.

It is an amenable number.

222221110220077 is a deficient number, since it is larger than the sum of its proper divisors (1).

222221110220077 is an equidigital number, since it uses as much as digits as its factorization.

222221110220077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6272, while the sum is 31.

Adding to 222221110220077 its reverse (770022011122222), we get a palindrome (992243121342299).

The spelling of 222221110220077 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, seventy-seven".