110212212120221 has 4 divisors (see below), whose sum is σ = 110232917031072. Its totient is φ = 110191507209372.

The previous prime is 110212212120187. The next prime is 110212212120229. The reversal of 110212212120221 is 122021212212011.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 110212212120221 - 2³⁸ = 109937334213277 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110212212120193 and 110212212120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110212212120229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10352447441 + ... + 10352458086.

It is an arithmetic number, because the mean of its divisors is an integer number (27558229257768).

Almost surely, 2^{110212212120221} is an apocalyptic number.

It is an amenable number.

110212212120221 is a deficient number, since it is larger than the sum of its proper divisors (20704910851).

110212212120221 is an equidigital number, since it uses as much as digits as its factorization.

110212212120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20704910850.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 110212212120221 its reverse (122021212212011), we get a palindrome (232233424332232).

The spelling of 110212212120221 in words is "one hundred ten trillion, two hundred twelve billion, two hundred twelve million, one hundred twenty thousand, two hundred twenty-one".