22221121202111 has 32 divisors (see below), whose sum is σ = 24324896913408. Its totient is φ = 20176758374400.

The previous prime is 22221121202089. The next prime is 22221121202177. The reversal of 22221121202111 is 11120212112222.

It is a cyclic number.

It is not a de Polignac number, because 22221121202111 - 2²⁶ = 22221054093247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22221121202411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 129153935 + ... + 129325871.

It is an arithmetic number, because the mean of its divisors is an integer number (760153028544).

Almost surely, 2^{22221121202111} is an apocalyptic number.

22221121202111 is a deficient number, since it is larger than the sum of its proper divisors (2103775711297).

22221121202111 is a wasteful number, since it uses less digits than its factorization.

22221121202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172691.

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

Adding to 22221121202111 its reverse (11120212112222), we get a palindrome (33341333314333).

The spelling of 22221121202111 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred two thousand, one hundred eleven".