22112122011221 has 8 divisors (see below), whose sum is σ = 24136122792864. Its totient is φ = 20090422541520.

The previous prime is 22112122011197. The next prime is 22112122011233. The reversal of 22112122011221 is 12211022121122.

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 22112122011221 - 2³⁰ = 22111048269397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22112122011193 and 22112122011202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112122016221) 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, 575307890 + ... + 575346323.

It is an arithmetic number, because the mean of its divisors is an integer number (3017015349108).

Almost surely, 2^{22112122011221} is an apocalyptic number.

It is an amenable number.

22112122011221 is a deficient number, since it is larger than the sum of its proper divisors (2024000781643).

22112122011221 is a wasteful number, since it uses less digits than its factorization.

22112122011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150655971.

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

Adding to 22112122011221 its reverse (12211022121122), we get a palindrome (34323144132343).

The spelling of 22112122011221 in words is "twenty-two trillion, one hundred twelve billion, one hundred twenty-two million, eleven thousand, two hundred twenty-one".