97777772222219 has 2 divisors, whose sum is σ = 97777772222220. Its totient is φ = 97777772222218.

The previous prime is 97777772222201. The next prime is 97777772222233. The reversal of 97777772222219 is 91222227777779.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 97777772222219 - 2¹² = 97777772218123 is a prime.

It is a super-2 number, since 2×97777772222219² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97777742222219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48888886111109 + 48888886111110.

It is an arithmetic number, because the mean of its divisors is an integer number (48888886111110).

Almost surely, 2^{97777772222219} is an apocalyptic number.

97777772222219 is a deficient number, since it is larger than the sum of its proper divisors (1).

97777772222219 is an equidigital number, since it uses as much as digits as its factorization.

97777772222219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 304946208, while the sum is 71.

The spelling of 97777772222219 in words is "ninety-seven trillion, seven hundred seventy-seven billion, seven hundred seventy-two million, two hundred twenty-two thousand, two hundred nineteen".