22121121100211 has 16 divisors (see below), whose sum is σ = 25350963419136. Its totient is φ = 18908702570016.

The previous prime is 22121121100201. The next prime is 22121121100231. The reversal of 22121121100211 is 11200112112122.

It is not a de Polignac number, because 22121121100211 - 2¹⁴ = 22121121083827 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22121121100211.

It is not an unprimeable number, because it can be changed into a prime (22121121100201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94645985 + ... + 94879421.

It is an arithmetic number, because the mean of its divisors is an integer number (1584435213696).

Almost surely, 2^{22121121100211} is an apocalyptic number.

22121121100211 is a deficient number, since it is larger than the sum of its proper divisors (3229842318925).

22121121100211 is a wasteful number, since it uses less digits than its factorization.

22121121100211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270698.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 22121121100211 its reverse (11200112112122), we get a palindrome (33321233212333).

The spelling of 22121121100211 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred thousand, two hundred eleven".