22222211112021 has 8 divisors (see below), whose sum is σ = 30917858938560. Its totient is φ = 14170685346752.

The previous prime is 22222211112007. The next prime is 22222211112029. The reversal of 22222211112021 is 12021111222222.

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 22222211112021 - 2⁹ = 22222211111509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222211112029) 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, 161030515236 + ... + 161030515373.

It is an arithmetic number, because the mean of its divisors is an integer number (3864732367320).

Almost surely, 2^{22222211112021} is an apocalyptic number.

It is an amenable number.

22222211112021 is a deficient number, since it is larger than the sum of its proper divisors (8695647826539).

22222211112021 is a wasteful number, since it uses less digits than its factorization.

22222211112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322061030635.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22222211112021 its reverse (12021111222222), we get a palindrome (34243322334243).

The spelling of 22222211112021 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred eleven million, one hundred twelve thousand, twenty-one".