222220000201221 has 16 divisors (see below), whose sum is σ = 359143434669120. Its totient is φ = 134678788000560.

The previous prime is 222220000201217. The next prime is 222220000201229. The reversal of 222220000201221 is 122102000022222.

222220000201221 is a `hidden beast` number, since 2 + 22 + 220 + 0 + 0 + 0 + 201 + 221 = 666.

It is not a de Polignac number, because 222220000201221 - 2² = 222220000201217 is a prime.

It is a super-2 number, since 2×222220000201221² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222220000201194 and 222220000201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222220000201229) 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, 374107744150 + ... + 374107744743.

It is an arithmetic number, because the mean of its divisors is an integer number (22446464666820).

Almost surely, 2^{222220000201221} is an apocalyptic number.

It is an amenable number.

222220000201221 is a deficient number, since it is larger than the sum of its proper divisors (136923434467899).

222220000201221 is a wasteful number, since it uses less digits than its factorization.

222220000201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748215488913 (or 748215488907 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222220000201221 its reverse (122102000022222), we get a palindrome (344322000223443).

The spelling of 222220000201221 in words is "two hundred twenty-two trillion, two hundred twenty billion, two hundred one thousand, two hundred twenty-one".