110212222122221 has 4 divisors (see below), whose sum is σ = 110212787441472. Its totient is φ = 110211656802972.

The previous prime is 110212222122047. The next prime is 110212222122269. The reversal of 110212222122221 is 122221222212011.

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 110212222122221 - 2¹⁴ = 110212222105837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110212222128221) 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, 282367091 + ... + 282757136.

It is an arithmetic number, because the mean of its divisors is an integer number (27553196860368).

Almost surely, 2^{110212222122221} is an apocalyptic number.

It is an amenable number.

110212222122221 is a deficient number, since it is larger than the sum of its proper divisors (565319251).

110212222122221 is an equidigital number, since it uses as much as digits as its factorization.

110212222122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565319250.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 110212222122221 its reverse (122221222212011), we get a palindrome (232433444334232).

The spelling of 110212222122221 in words is "one hundred ten trillion, two hundred twelve billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-one".