22222002120221 has 16 divisors (see below), whose sum is σ = 24410584483200. Its totient is φ = 20135468441088.

The previous prime is 22222002120187. The next prime is 22222002120251. The reversal of 22222002120221 is 12202120022222.

It is a cyclic number.

It is not a de Polignac number, because 22222002120221 - 2¹⁴ = 22222002103837 is a prime.

It is a super-2 number, since 2×22222002120221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22222002120193 and 22222002120202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222002120251) 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, 3354485 + ... + 7463013.

It is an arithmetic number, because the mean of its divisors is an integer number (1525661530200).

Almost surely, 2^{22222002120221} is an apocalyptic number.

It is an amenable number.

22222002120221 is a deficient number, since it is larger than the sum of its proper divisors (2188582362979).

22222002120221 is a wasteful number, since it uses less digits than its factorization.

22222002120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4120948.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22222002120221 its reverse (12202120022222), we get a palindrome (34424122142443).

The spelling of 22222002120221 in words is "twenty-two trillion, two hundred twenty-two billion, two million, one hundred twenty thousand, two hundred twenty-one".