2221222219973 has 2 divisors, whose sum is σ = 2221222219974. Its totient is φ = 2221222219972.

The previous prime is 2221222219963. The next prime is 2221222220039. The reversal of 2221222219973 is 3799122221222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1663359622369 + 557862597604 = 1289713^2 + 746902^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221222219973 - 2¹⁰ = 2221222218949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221222219933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110611109986 + 1110611109987.

It is an arithmetic number, because the mean of its divisors is an integer number (1110611109987).

Almost surely, 2^{2221222219973} is an apocalyptic number.

It is an amenable number.

2221222219973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221222219973 is an equidigital number, since it uses as much as digits as its factorization.

2221222219973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The spelling of 2221222219973 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-two million, two hundred nineteen thousand, nine hundred seventy-three".