222222010020121 has 8 divisors (see below), whose sum is σ = 227643609650184. Its totient is φ = 216800484228480.

The previous prime is 222222010020119. The next prime is 222222010020133. The reversal of 222222010020121 is 121020010222222.

It can be written as a sum of positive squares in 4 ways, for example, as 39222801621721 + 182999208398400 = 6262811^2 + 13527720^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222222010020121 - 2¹ = 222222010020119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222222010080121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12342610 + ... + 24429163.

It is an arithmetic number, because the mean of its divisors is an integer number (28455451206273).

Almost surely, 2^{222222010020121} is an apocalyptic number.

It is an amenable number.

222222010020121 is a deficient number, since it is larger than the sum of its proper divisors (5421599630063).

222222010020121 is a wasteful number, since it uses less digits than its factorization.

222222010020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36919211.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 222222010020121 its reverse (121020010222222), we get a palindrome (343242020242343).

The spelling of 222222010020121 in words is "two hundred twenty-two trillion, two hundred twenty-two billion, ten million, twenty thousand, one hundred twenty-one".