22121220222211 has 8 divisors (see below), whose sum is σ = 24214602840624. Its totient is φ = 20041564703520.

The previous prime is 22121220222197. The next prime is 22121220222313. The reversal of 22121220222211 is 11222202212122.

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 22121220222211 - 2³¹ = 22119072738563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22121220225211) 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, 3431771556 + ... + 3431778001.

It is an arithmetic number, because the mean of its divisors is an integer number (3026825355078).

Almost surely, 2^{22121220222211} is an apocalyptic number.

22121220222211 is a deficient number, since it is larger than the sum of its proper divisors (2093382618413).

22121220222211 is a wasteful number, since it uses less digits than its factorization.

22121220222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6863549861.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22121220222211 its reverse (11222202212122), we get a palindrome (33343422434333).

The spelling of 22121220222211 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, two hundred eleven".