110222212120021 has 2 divisors, whose sum is σ = 110222212120022. Its totient is φ = 110222212120020.

The previous prime is 110222212120001. The next prime is 110222212120051. The reversal of 110222212120021 is 120021212222011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108410264600625 + 1811947519396 = 10412025^2 + 1346086^2 .

It is a cyclic number.

It is not a de Polignac number, because 110222212120021 - 2⁷ = 110222212119893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (110222212120001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55111106060010 + 55111106060011.

It is an arithmetic number, because the mean of its divisors is an integer number (55111106060011).

Almost surely, 2^{110222212120021} is an apocalyptic number.

It is an amenable number.

110222212120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

110222212120021 is an equidigital number, since it uses as much as digits as its factorization.

110222212120021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 110222212120021 its reverse (120021212222011), we get a palindrome (230243424342032).

The spelling of 110222212120021 in words is "one hundred ten trillion, two hundred twenty-two billion, two hundred twelve million, one hundred twenty thousand, twenty-one".