222101211222121 has 32 divisors (see below), whose sum is σ = 297323452016640. Its totient is φ = 160591370553600.

The previous prime is 222101211222049. The next prime is 222101211222179. The reversal of 222101211222121 is 121222112101222.

It is not a de Polignac number, because 222101211222121 - 2²³ = 222101202833513 is a prime.

It is a super-3 number, since 3×222101211222121³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222101211222092 and 222101211222101.

It is not an unprimeable number, because it can be changed into a prime (222101211222221) 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 31 ways as a sum of consecutive naturals, for example, 1194783331 + ... + 1194969208.

It is an arithmetic number, because the mean of its divisors is an integer number (9291357875520).

Almost surely, 2^{222101211222121} is an apocalyptic number.

It is an amenable number.

222101211222121 is a deficient number, since it is larger than the sum of its proper divisors (75222240794519).

222101211222121 is a wasteful number, since it uses less digits than its factorization.

222101211222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389752645.

The product of its (nonzero) digits is 256, while the sum is 22.

Adding to 222101211222121 its reverse (121222112101222), we get a palindrome (343323323323343).

The spelling of 222101211222121 in words is "two hundred twenty-two trillion, one hundred one billion, two hundred eleven million, two hundred twenty-two thousand, one hundred twenty-one".