22101222121211 has 8 divisors (see below), whose sum is σ = 23451403856400. Its totient is φ = 20756608146688.

The previous prime is 22101222121171. The next prime is 22101222121217. The reversal of 22101222121211 is 11212122210122.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22101222121211 is a prime.

It is a super-2 number, since 2×22101222121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22101222121217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1391931986 + ... + 1391947863.

It is an arithmetic number, because the mean of its divisors is an integer number (2931425482050).

Almost surely, 2^{22101222121211} is an apocalyptic number.

22101222121211 is a deficient number, since it is larger than the sum of its proper divisors (1350181735189).

22101222121211 is a wasteful number, since it uses less digits than its factorization.

22101222121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783880333.

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

Adding to 22101222121211 its reverse (11212122210122), we get a palindrome (33313344331333).

The spelling of 22101222121211 in words is "twenty-two trillion, one hundred one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".