222011020121221 has 8 divisors (see below), whose sum is σ = 222257647868544. Its totient is φ = 221764511841600.

The previous prime is 222011020121213. The next prime is 222011020121287. The reversal of 222011020121221 is 122121020110222.

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 222011020121221 - 2³ = 222011020121213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222011020121521) 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, 26147935 + ... + 33581788.

It is an arithmetic number, because the mean of its divisors is an integer number (27782205983568).

Almost surely, 2^{222011020121221} is an apocalyptic number.

It is an amenable number.

222011020121221 is a deficient number, since it is larger than the sum of its proper divisors (246627747323).

222011020121221 is a wasteful number, since it uses less digits than its factorization.

222011020121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59733851.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222011020121221 its reverse (122121020110222), we get a palindrome (344132040231443).

The spelling of 222011020121221 in words is "two hundred twenty-two trillion, eleven billion, twenty million, one hundred twenty-one thousand, two hundred twenty-one".