22120210120221 has 24 divisors (see below), whose sum is σ = 32277335017824. Its totient is φ = 14596615358880.

The previous prime is 22120210120219. The next prime is 22120210120249. The reversal of 22120210120221 is 12202101202122.

It is a happy number.

22120210120221 is a `hidden beast` number, since 2 + 212 + 0 + 210 + 1 + 20 + 221 = 666.

It is not a de Polignac number, because 22120210120221 - 2¹ = 22120210120219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22120210120194 and 22120210120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22120210120201) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8587551 + ... + 10862156.

It is an arithmetic number, because the mean of its divisors is an integer number (1344888959076).

Almost surely, 2^{22120210120221} is an apocalyptic number.

It is an amenable number.

22120210120221 is a deficient number, since it is larger than the sum of its proper divisors (10157124897603).

22120210120221 is a wasteful number, since it uses less digits than its factorization.

22120210120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19451001 (or 19450998 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22120210120221 its reverse (12202101202122), we get a palindrome (34322311322343).

The spelling of 22120210120221 in words is "twenty-two trillion, one hundred twenty billion, two hundred ten million, one hundred twenty thousand, two hundred twenty-one".