222000221121977 has 2 divisors, whose sum is σ = 222000221121978. Its totient is φ = 222000221121976.

The previous prime is 222000221121859. The next prime is 222000221122049. The reversal of 222000221121977 is 779121122000222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188237741440576 + 33762479681401 = 13719976^2 + 5810549^2 .

It is a cyclic number.

It is not a de Polignac number, because 222000221121977 - 2⁴⁶ = 151631476944313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 222000221121977.

It is not a weakly prime, because it can be changed into another prime (222000221121277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111000110560988 + 111000110560989.

It is an arithmetic number, because the mean of its divisors is an integer number (111000110560989).

Almost surely, 2^{222000221121977} is an apocalyptic number.

It is an amenable number.

222000221121977 is a deficient number, since it is larger than the sum of its proper divisors (1).

222000221121977 is an equidigital number, since it uses as much as digits as its factorization.

222000221121977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 38.

The spelling of 222000221121977 in words is "two hundred twenty-two trillion, two hundred twenty-one million, one hundred twenty-one thousand, nine hundred seventy-seven".