21210222012107 has 2 divisors, whose sum is σ = 21210222012108. Its totient is φ = 21210222012106.

The previous prime is 21210222012017. The next prime is 21210222012121. The reversal of 21210222012107 is 70121022201212.

Together with previous prime (21210222012017) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21210222012107 - 2¹² = 21210222008011 is a prime.

It is not a weakly prime, because it can be changed into another prime (21210222011107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605111006053 + 10605111006054.

It is an arithmetic number, because the mean of its divisors is an integer number (10605111006054).

Almost surely, 2^{21210222012107} is an apocalyptic number.

21210222012107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21210222012107 is an equidigital number, since it uses as much as digits as its factorization.

21210222012107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 21210222012107 its reverse (70121022201212), we get a palindrome (91331244213319).

The spelling of 21210222012107 in words is "twenty-one trillion, two hundred ten billion, two hundred twenty-two million, twelve thousand, one hundred seven".