2212212011221 has 8 divisors (see below), whose sum is σ = 2250026835264. Its totient is φ = 2174582101440.

The previous prime is 2212212011213. The next prime is 2212212011231. The reversal of 2212212011221 is 1221102122122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2212212011221 - 2³ = 2212212011213 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 (2212212011231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46204435 + ... + 46252288.

It is an arithmetic number, because the mean of its divisors is an integer number (281253354408).

Almost surely, 2^{2212212011221} is an apocalyptic number.

It is an amenable number.

2212212011221 is a deficient number, since it is larger than the sum of its proper divisors (37814824043).

2212212011221 is an equidigital number, since it uses as much as digits as its factorization.

2212212011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92457131.

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

Adding to 2212212011221 its reverse (1221102122122), we get a palindrome (3433314133343).

The spelling of 2212212011221 in words is "two trillion, two hundred twelve billion, two hundred twelve million, eleven thousand, two hundred twenty-one".