2221201213123 has 2 divisors, whose sum is σ = 2221201213124. Its totient is φ = 2221201213122.

The previous prime is 2221201213087. The next prime is 2221201213169. The reversal of 2221201213123 is 3213121021222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2221201213123 - 2¹³ = 2221201204931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2221201213094 and 2221201213103.

It is not a weakly prime, because it can be changed into another prime (2221201213723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110600606561 + 1110600606562.

It is an arithmetic number, because the mean of its divisors is an integer number (1110600606562).

Almost surely, 2^{2221201213123} is an apocalyptic number.

2221201213123 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221201213123 is an equidigital number, since it uses as much as digits as its factorization.

2221201213123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2221201213123 its reverse (3213121021222), we get a palindrome (5434322234345).

The spelling of 2221201213123 in words is "two trillion, two hundred twenty-one billion, two hundred one million, two hundred thirteen thousand, one hundred twenty-three".