221220200107 has 2 divisors, whose sum is σ = 221220200108. Its totient is φ = 221220200106.

The previous prime is 221220200093. The next prime is 221220200137. The reversal of 221220200107 is 701002022122.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221220200107 is a prime.

It is a super-2 number, since 2×221220200107² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (221220200137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110610100053 + 110610100054.

It is an arithmetic number, because the mean of its divisors is an integer number (110610100054).

Almost surely, 2^221220200107 is an apocalyptic number.

221220200107 is a deficient number, since it is larger than the sum of its proper divisors (1).

221220200107 is an equidigital number, since it uses as much as digits as its factorization.

221220200107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 19.

Adding to 221220200107 its reverse (701002022122), we get a palindrome (922222222229).

The spelling of 221220200107 in words is "two hundred twenty-one billion, two hundred twenty million, two hundred thousand, one hundred seven".