222000012211221 has 48 divisors (see below), whose sum is σ = 340155956574720. Its totient is φ = 139273293559680.

The previous prime is 222000012211217. The next prime is 222000012211249. The reversal of 222000012211221 is 122112210000222.

It is a happy number.

222000012211221 is a `hidden beast` number, since 2 + 220 + 0 + 0 + 0 + 1 + 221 + 1 + 221 = 666.

It is not a de Polignac number, because 222000012211221 - 2² = 222000012211217 is a prime.

It is a super-2 number, since 2×222000012211221² (a number of 29 digits) contains 22 as substring.

222000012211221 is a modest number, since divided by 12211221 gives 2220000 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 222000012211194 and 222000012211203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222000012211321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11350206 + ... + 23933808.

It is an arithmetic number, because the mean of its divisors is an integer number (7086582428640).

Almost surely, 2^{222000012211221} is an apocalyptic number.

It is an amenable number.

222000012211221 is a deficient number, since it is larger than the sum of its proper divisors (118155944363499).

222000012211221 is a wasteful number, since it uses less digits than its factorization.

222000012211221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12585386 (or 12585383 counting only the distinct ones).

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

Adding to 222000012211221 its reverse (122112210000222), we get a palindrome (344112222211443).

The spelling of 222000012211221 in words is "two hundred twenty-two trillion, twelve million, two hundred eleven thousand, two hundred twenty-one".