222012010220121 has 48 divisors (see below), whose sum is σ = 365049815195520. Its totient is φ = 128701768757760.

The previous prime is 222012010220093. The next prime is 222012010220129. The reversal of 222012010220121 is 121022010210222.

It is a happy number.

222012010220121 is a `hidden beast` number, since 2 + 220 + 1 + 201 + 0 + 220 + 1 + 21 = 666.

It is not a de Polignac number, because 222012010220121 - 2¹¹ = 222012010218073 is a prime.

It is a super-2 number, since 2×222012010220121² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222012010220094 and 222012010220103.

It is not an unprimeable number, because it can be changed into a prime (222012010220129) 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, 565859265 + ... + 566251473.

It is an arithmetic number, because the mean of its divisors is an integer number (7605204483240).

Almost surely, 2^{222012010220121} is an apocalyptic number.

It is an amenable number.

222012010220121 is a deficient number, since it is larger than the sum of its proper divisors (143037804975399).

222012010220121 is a wasteful number, since it uses less digits than its factorization.

222012010220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640846 (or 640843 counting only the distinct ones).

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

Adding to 222012010220121 its reverse (121022010210222), we get a palindrome (343034020430343).

The spelling of 222012010220121 in words is "two hundred twenty-two trillion, twelve billion, ten million, two hundred twenty thousand, one hundred twenty-one".