21121022010107 has 2 divisors, whose sum is σ = 21121022010108. Its totient is φ = 21121022010106.

The previous prime is 21121022010071. The next prime is 21121022010133. The reversal of 21121022010107 is 70101022012112.

It is a happy number.

Together with previous prime (21121022010071) 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 21121022010107 - 2²² = 21121017815803 is a prime.

It is not a weakly prime, because it can be changed into another prime (21121022019107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10560511005053 + 10560511005054.

It is an arithmetic number, because the mean of its divisors is an integer number (10560511005054).

Almost surely, 2^{21121022010107} is an apocalyptic number.

21121022010107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21121022010107 is an equidigital number, since it uses as much as digits as its factorization.

21121022010107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 21121022010107 its reverse (70101022012112), we get a palindrome (91222044022219).

The spelling of 21121022010107 in words is "twenty-one trillion, one hundred twenty-one billion, twenty-two million, ten thousand, one hundred seven".