201220121107 has 2 divisors, whose sum is σ = 201220121108. Its totient is φ = 201220121106.

The previous prime is 201220121099. The next prime is 201220121117. The reversal of 201220121107 is 701121022102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201220121107 - 2³ = 201220121099 is a prime.

It is not a weakly prime, because it can be changed into another prime (201220121117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610060553 + 100610060554.

It is an arithmetic number, because the mean of its divisors is an integer number (100610060554).

Almost surely, 2^201220121107 is an apocalyptic number.

201220121107 is a deficient number, since it is larger than the sum of its proper divisors (1).

201220121107 is an equidigital number, since it uses as much as digits as its factorization.

201220121107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 19.

Adding to 201220121107 its reverse (701121022102), we get a palindrome (902341143209).

The spelling of 201220121107 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-one thousand, one hundred seven".