22221000021097 has 2 divisors, whose sum is σ = 22221000021098. Its totient is φ = 22221000021096.

The previous prime is 22221000021089. The next prime is 22221000021127. The reversal of 22221000021097 is 79012000012222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22199749378921 + 21250642176 = 4711661^2 + 145776^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221000021097 - 2³ = 22221000021089 is a prime.

It is a super-3 number, since 3×22221000021097³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (22221000021037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11110500010548 + 11110500010549.

It is an arithmetic number, because the mean of its divisors is an integer number (11110500010549).

Almost surely, 2^{22221000021097} is an apocalyptic number.

It is an amenable number.

22221000021097 is a deficient number, since it is larger than the sum of its proper divisors (1).

22221000021097 is an equidigital number, since it uses as much as digits as its factorization.

22221000021097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 22221000021097 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one thousand, ninety-seven".