21122011422211 has 8 divisors (see below), whose sum is σ = 24148359061760. Its totient is φ = 18097893141768.

The previous prime is 21122011422203. The next prime is 21122011422251. The reversal of 21122011422211 is 11222411022112.

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 21122011422211 - 2³ = 21122011422203 is a prime.

It is a super-2 number, since 2×21122011422211² (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 (21122011422251) 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, 557319471 + ... + 557357368.

It is an arithmetic number, because the mean of its divisors is an integer number (3018544882720).

Almost surely, 2^{21122011422211} is an apocalyptic number.

21122011422211 is a deficient number, since it is larger than the sum of its proper divisors (3026347639549).

21122011422211 is a wasteful number, since it uses less digits than its factorization.

21122011422211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114679553.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 21122011422211 its reverse (11222411022112), we get a palindrome (32344422444323).

The spelling of 21122011422211 in words is "twenty-one trillion, one hundred twenty-two billion, eleven million, four hundred twenty-two thousand, two hundred eleven".