2220222210121 has 2 divisors, whose sum is σ = 2220222210122. Its totient is φ = 2220222210120.

The previous prime is 2220222210119. The next prime is 2220222210133. The reversal of 2220222210121 is 1210122220222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1967076375625 + 253145834496 = 1402525^2 + 503136^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220222210121 - 2¹ = 2220222210119 is a prime.

Together with 2220222210119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2220222210181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110111105060 + 1110111105061.

It is an arithmetic number, because the mean of its divisors is an integer number (1110111105061).

Almost surely, 2^{2220222210121} is an apocalyptic number.

It is an amenable number.

2220222210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220222210121 is an equidigital number, since it uses as much as digits as its factorization.

2220222210121 is an evil number, because the sum of its binary digits is even.

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

Adding to 2220222210121 its reverse (1210122220222), we get a palindrome (3430344430343).

The spelling of 2220222210121 in words is "two trillion, two hundred twenty billion, two hundred twenty-two million, two hundred ten thousand, one hundred twenty-one".